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【种花家务·代数】1-6-10总复习题(代数第一册)『数理化自学丛书6677版』

2023-09-30 22:06 作者:山嵓  | 我要投稿

【阅前提示】本篇出自『数理化自学丛书6677版』,此版丛书是“数理化自学丛书编委会”于1963-1966年陆续出版,并于1977年正式再版的基础自学教材,本系列丛书共包含17本,层次大致相当于如今的初高中水平,其最大特点就是可用于“自学”。当然由于本书是大半个世纪前的教材,很多概念已经与如今迥异,因此不建议零基础学生直接拿来自学。不过这套丛书却很适合像我这样已接受过基础教育但却很不扎实的学酥重新自修以查漏补缺。另外,黑字是教材原文,彩字是我写的注解。

【山话嵓语】我在原有“自学丛书”系列17册的基础上又添加了1册八五人教中学甲种本《微积分初步》,原因有二:一则,我是双鱼座,有一定程度的偶双症,但“自学丛书”系列中代数4册、几何5册实在令我刺挠,因此就需要加入一本代数,使两边能够对偶平衡;二则,我认为《微积分初步》这本书对“准大学生”很重要,以我的惨痛教训为例,大一高数第一堂课,我是直接蒙圈,学了个寂寞。另外大学物理的前置条件是必须有基础微积分知识,因此我所读院校的大学物理课是推迟开课;而比较生猛的大学则是直接开课,然后在绪论课中猛灌基础高数(例如田光善舒幼生老师的力学课)。我选择在“自学丛书”17本的基础上添加这本《微积分初步》,就是希望小伙伴升大学前可以看看,不至于像我当年那样被高数打了个措手不及。

附录1:英语字母表

附录2:常用希腊字母表

总复习题

1、如 4<a<16,写出所有 a 的整数值来;写出所有 a 的偶数值来;写出所有 a 的奇数值来;写出所有 a 的质数的值来。

2、如 3<| a |<6,写出所有 a 的整数值来;写出所有 a 的正整数值来;写出所有 a 的负整数值来。

3、如 | x | ≤ 2,写出所有 a 的整数值来;写出所有 a 的正整数值来;写出所有 a 的负整数值。【注】≤ 2 读做小于或等于2,表示既可以小于 2,也可以等于 2  。

4、如 x 的绝对值不大于 3,写出所有 a 的整数值来;写出所有 a 的正整数值来;写出所有 a 的负整数值来。

求下列代数式的值(5~10):

%5Csmall%5Cbegin%7Baligned%7D%0A5%E3%80%81%26(1)%5C%3B-a%5E4%2C%5Ctext%7B%E5%85%B6%E4%B8%AD%7Da%3D-3%3B%26%26(2)%5C%3B(-a)%5E5%2C%5Ctext%7B%E5%85%B6%E4%B8%AD%7Da%3D-%5Cfrac23%3B%5C%5C%0A%26(3)%5C%3B-a%5E%7B103%7D%5Ctext%7B%2C%E5%85%B6%E4%B8%AD%7Da%3D-1%3B%26%26(4)%5C%3B(-a)%5E%7B150%7D%5Ctext%7B%2C%E5%85%B6%E4%B8%AD%7Da%3D0.%0A%5Cend%7Baligned%7D

%5Csmall%5Cbegin%7Baligned%7D6%E3%80%81%26(1)%5C%3Ba-b%2C%5Ctext%7B%E5%85%B6%E4%B8%AD%7Da%3D-3%2Cb%3D13%3B%5C%5C%26(2)%5C%3B2a-3b%2C%5Ctext%7B%E5%85%B6%E4%B8%AD%7Da%3D3%5Cfrac%7B1%7D%7B3%7D%2Cb%3D-5%5Cfrac%7B1%7D%7B2%7D.%5Cend%7Baligned%7D

%5Csmall%5Cbegin%7Baligned%7D7%E3%80%81%26(1)%5Cfrac%7B3%7D%7Bx%7D-%5Cfrac%7Bx%7D%7B3%7D%2C%5Ctext%7B%E5%85%B6%E4%B8%AD%20%7Dx%3D%5Cfrac%7B1%7D%7B2%7D%3B%5C%5C%26(2)%5Cfrac%7B4%7D%7Bx%7D-%5Cfrac%7Bx%7D%7B4%7D%2C%5Ctext%7B%E5%85%B6%E4%B8%AD%20%7Dx%3D-%5Cfrac%7B1%7D%7B3%7D.%5Cend%7Baligned%7D

%5Csmall%5Cbegin%7Baligned%7D8%E3%80%81%26(1)%5C%3B3x%5E3%2B2x%5E2-x%2B1%5Ctext%7B%2C%E5%85%B6%E4%B8%AD%20%7Dx%3D1%5Cfrac13%3B%5C%5C%26(2)%5C%3B%20x%5E3-2x%5E2-3x-2%5Ctext%7B%2C%E5%85%B6%E4%B8%AD%20%7Dx%3D-%5Cfrac12.%5Cend%7Baligned%7D

%5Csmall9%E3%80%81%5Cfrac%7B1%2Ba-3a%5E2%7D%7B1-a%2B3a%5E2%7D%2C%5Ctext%7B%E5%85%B6%E4%B8%AD(1)%7Da%3D-2%3B(2)a%3D-%5Cfrac23.

%5Csmall%5Cbegin%7Baligned%7D10%E3%80%81%5Cfrac%7B(a-b)%5E2%7D%7Ba%5E2b%5E2%7D%5Ctext%7B%2C%E5%85%B6%E4%B8%AD(1)%7D%26a%3D-3%2Cb%3D-2%3B%5C%3B(2)a%3D0.2%2Cb%3D-0.3.%5Cend%7Baligned%7D

计算(11~16):

%5Csmall%5Cbegin%7Baligned%7D%0A%2611%E3%80%8113%5Cfrac5%7B12%7D%2B%5Cleft(-3%5Cfrac7%7B15%7D%5Cright)%2B(-13)%2B4%5Cfrac%7B11%7D%7B18%7D.%20%5C%5C%0A%2612%E3%80%813.73%2B%5Cleft(-%5Cfrac14%5Cright)%2B%5Cleft(-3%5Cfrac56%5Cright)%2B9.37%2B%5Cleft(-20%5Cfrac1%7B10%7D%5Cright)%2B4%5Cfrac56.%20%20%5C%5C%0A%2613%E3%80%81(-1932)-%5B(-852)-932-(-322)%5D.%20%5C%5C%0A%2614%E3%80%8132%5Cfrac34-%5B(-4.15)-3%5D.%5C%5C%0A%2615%E3%80%81%5Cleft%5B1-%5Cfrac%7B1%7D%7B12%7D-%5Cleft(-%5Cfrac%7B2%7D%7B15%7D%5Cright)%5Cright%5D-%5Cleft%5B%5Cleft(-%5Cfrac%7B1%7D%7B12%7D%5Cright)-%5Cfrac%7B7%7D%7B15%7D%2B%5Cleft(-1%5Cfrac%7B19%7D%7B20%7D%5Cright)%5Cright%5D.%20%5C%5C%0A%2616%E3%80%8112%5Cfrac%7B5%7D%7B12%7D-%5Cleft(-3%5Cfrac%7B17%7D%7B18%7D%5Cright)-4%5Cfrac%7B3%7D%7B4%7D%2B%5Cleft(-4%5Cfrac%7B11%7D%7B18%7D%5Cright)-1%5Cfrac%7B1%7D%7B24%7D.%0A%5Cend%7Baligned%7D

17、计算:| a+b |,| a |+| b | 及 | a |+| b |-| a+b |,当 a=%5Cscriptsize-2%5Cfrac%7B1%7D%7B2%7D%20,b=%5Cscriptsize-3%5Cfrac%7B1%7D%7B3%7D%20  。

18、计算:| a+b |,| a |+| b | 及 | a |+| b |-| a+b |,当 a=-5.32,b=+3.47  。

19、计算:| a+b |,| a |+| b | 及 | a |+| b |-| a+b |,当 a=%5Cscriptsize-2%5Cfrac%7B1%7D%7B2%7D%20,b=%5Cscriptsize-5%5Cfrac%7B1%7D%7B3%7D%20  。

20、计算:| a+b |,| a |+| b | 及 | a |+| b |-| a+b |,当 a=-3.245;b=-5.148  。

计算(21~24):

%5Csmall%5Cbegin%7Baligned%7D%0A%2621%E3%80%81(-0.1)%5Ctimes%5Cleft%5B(-5)%5Ctimes(-12)%5Ctimes(-7)%5Ctimes%5Cleft(-%5Cfrac%7B1%7D%7B3%7D%5Cright)%5Ctimes%5Cleft(-%5Cfrac%7B1%7D%7B21%7D%5Cright)%5Cright%5D%20.%20%5C%5C%0A%2622%E3%80%81(-6.4)%5Ctimes%5Cleft%5B1%5Ctimes%5Cleft(-1%5Cfrac%7B1%7D%7B2%7D%5Cright)%5Ctimes10.8354%5Ctimes0%5Ctimes(-3.8)%5Cright%5D.%20%5C%5C%0A%2623%E3%80%81(-1)-%5Cleft(-60%5Cfrac12%5Cright)%5Ctimes%5Cfrac4%7B11%7D.%20%5C%5C%0A%2624%E3%80%811.12%5Ctimes3%5Cfrac18-(-1.75)%5Ctimes2%5Cfrac27%2B(-3.4)%5Ctimes1.25.%0A%5Cend%7Baligned%7D

25、求%5Cscriptsize-%5Cfrac%7B1%7D%7B3%7D%20%5Cscriptsize%5Cfrac%7B1%7D%7B15%7D%20的和的倒数的相反数。

26、求%5Cscriptsize%5Cfrac%7B1%7D%7B5%7D%20的相反数与 0.3 的倒数的和的平方。

27、求-3.2 与 5.4 的绝对值的和的相反的数。

28、求-5 与 0.3 的和的绝对值的相反的数。

29、把 3,-2,0.4 等三个数的倒数按照由小到大的次序排列,并用不等号连接起来。

30、把-5,%5Cscriptsize%5Cfrac%7B1%7D%7B6%7D%20,0.17 等三个数的相反的数按照由小到大的次序排列,并用不等号连接起来。

%5Csmall%5Cbegin%7Baligned%7D%0A%2631%E3%80%81%5Ctext%7B%E8%AE%A1%E7%AE%97%3A%7D4%5Ctimes(-0.5)%5E%7B2%7D-%5Cleft(-2%5Cfrac%7B2%7D%7B3%7D%5Cright)%5Cdiv(-2)%5E%7B3%7D%2B(-5).%20%5C%5C%0A%2632%E3%80%81%5Ctext%7B%20%E8%AE%A1%E7%AE%97%3A%7D%5Cleft(-1%5Cfrac%7B1%7D%7B2%7D%5Cright)%5Cdiv%5Cleft(-%5Cfrac%7B3%7D%7B4%7D%5Cright)-4%5Ctimes%5Cleft(-1%5Cfrac%7B1%7D%7B2%7D%5Cright)%5E%7B3%7D%5Cdiv%5Cleft(-%5Cfrac%7B27%7D%7B11%7D%5Cright).%20%5C%5C%0A%2633%E3%80%81%5Ctext%7B%20%E6%B1%82%E5%80%BC%3A%20%7D3a%5E2-2b%5E3%2C%5Ctext%7B%20%E5%85%B6%E4%B8%AD%20%7Da%3D-1%2Cb%3D-2.%20%5C%5C%0A%2634%E3%80%81%5Ctext%7B%20%E6%B1%82%E5%80%BC%3A%20%7D%5Cfrac%7B2x%5E4-3y%5E3%7D%7B1-x%5E2%7D%5Ctext%7B%2C%E5%85%B6%E4%B8%AD%20%7Dx%3D-%5Cfrac12%2Cy%3D-%5Cfrac13.%20%0A%5Cend%7Baligned%7D

计算(35~41):

%5Csmall%5Cbegin%7Baligned%7D%0A%2635%E3%80%81%5Cleft(-%5Cfrac%7B2%7D%7B3%7Dx%5E%7Bn-1%7Dy%5Cright)%5Cleft(1%5Cfrac%7B1%7D%7B5%7Dxy%5E%7Bm-1%7D%5Cright)%5Cquad(m%2Cn%5Ctext%7B%20%E6%98%AF%E5%A4%A7%E4%BA%8E%201%20%E7%9A%84%E8%87%AA%E7%84%B6%E6%95%B0%7D).%5C%5C%0A%2636%E3%80%81%5Cleft(-1%5Cfrac%7B1%7D%7B2%7Dx%5E2y%5E%7Bn-1%7Dz%5Cright)%5Cleft(-1%5Cfrac%7B1%7D%7B3%7Dxyz%5En%5Cright)%5Cquad(n%5Ctext%7B%20%E6%98%AF%E5%A4%A7%E4%BA%8E%201%20%E7%9A%84%E8%87%AA%E7%84%B6%E6%95%B0%7D).%20%5C%5C%0A%2637%E3%80%81%5B-(-2a%5E2)%5E2%5D%5E3.%5C%5C%0A%2638%E3%80%81-(-3ab%5E2c%5E3)%5E3.%5C%5C%0A%2639%E3%80%81(-x%5E2)%5E3%5Ccdot(x%5E5)%5E4.%5C%5C%0A%2640%E3%80%81(ab%5E2c%5E3)%5E3-(0.5ab%5E2c%5E3)%5E3(4ab%5E2)(-5c)%5E3.%5C%5C%0A%2641%E3%80%814(x-2y%2B3z)-2(x%2By-2z)-3(-x%2By-3z).%0A%5Cend%7Baligned%7D

用直式计算(42~47):

%5Csmall%5Cbegin%7Baligned%7D%0A%2642%E3%80%81(2x%5E2%2B3y%5E2-4xy)(3xy%2B3x%5E2-2y%5E2).%5C%5C%0A%2643%E3%80%81(3a%5E3-5a%5E2b%2B6b%5E3)(-3a%5E2-4ab%2B5b%5E2).%5C%5C%0A%2644%E3%80%81(6a%5E3%2Ba%5E2-29a%2B21)%5Cdiv(2a-3).%5C%5C%0A%2645%E3%80%81(5x%5E2-19x%5E3%2B17x%2B6x%5E4-4)%5Cdiv(1-5x%2B3x%5E2)%5C%5C%0A%2646%E3%80%81(x%5E7%2By%5E7)%5Cdiv(x%2By).%5C%5C%0A%2647%E3%80%81(x%5E7-y%5E7)%5Cdiv(x-y).%0A%5Cend%7Baligned%7D

48、如 A=3x²-4x+1,B=5x³-2x²+6x-7,C=x-1,求 (1) AC-B;(2) AB÷C  。

用乘法公式演算(49~56):

%5Csmall%5Cbegin%7Baligned%7D%0A49%E3%80%81%26(1)(a%2B2b-3c)%5E2%3B%5C%5C%0A%26(2)(a-2b-3c)(a%2B2b%2B3c).%5C%5C%0A50%E3%80%81%26(1)(a-2b-3c)(a%2B2b-3c)%3B%20%5C%5C%0A%26(2)%5Cleft(-a%2B2b-3c%5Cright)%5Cleft(a-2b-3c%5Cright).%5C%5C%0A51%E3%80%81%26(1)(a%2B2b%2Bc-2d)(a-2b%2Bc%2B2d)%3B%5C%5C%0A%26(2)%5C%3A(a-b%2B2c-3d)(a%2Bb-2c%2B3d).%5C%5C%0A52%E3%80%81%26(1)(3a%5E%7B5%7D-2b%5E%7B4%7D)%5E%7B2%7D%5Ccdot(3a%5E%7B5%7D%2B2b%5E%7B4%7D)%5E%7B2%7D%3B%5C%5C%0A%26(2)(2x%5E2-3y%5E3)%5E2%5Ccdot(4x%5E4%2B6x%5E2y%5E3%2B9y%5E6)%5E2.%5C%5C%0A53%E3%80%81%26(a%5E2%2Bb%5E3)%5E3(a%5E4-a%5E2b%5E3%2Bb%5E6)%5E3.%20%5C%5C%0A54%E3%80%81%26(a%2Bb)(a-b)(a%5E%7B2%7D%2Bb%5E%7B2%7D)(a%5E%7B4%7D%2Bb%5E%7B4%7D)(a%5E%7B8%7D%2Bb%5E%7B8%7D)(a%5E%7B16%7D%2Bb%5E%7B16%7D).%20%5C%5C%0A55%E3%80%81%26(x%2B3)(x-5)%2B(x-7)(x%2B9).%20%5C%5C%0A56%E3%80%81%26(2x%2B3)(3x%2B1)-(2x-1)(3x-2).%0A%5Cend%7Baligned%7D

57、用简便方法计算:(1) 298×302;(2) 15.4×16.6  。

58、用简便方法计算:(1) (59.9)²;(2) (502)²  。

59、先化简再求值:5x(y-z)-{2z(3x-2y)-[4y(3x+z)-8(4xy-xz+yz)]},其中 x=%5Cscriptsize-%5Cfrac%7B2%7D%7B3%7D%20,y=%5Cscriptsize-%5Cfrac%7B1%7D%7B2%7D%20,z=-5  。

60、先化简再求值:(x²-2)²-(x³+2)²,其中x=-2  。

分解因式(61~65):

%5Csmall%5Cbegin%7Baligned%7D%0A%2661%E3%80%81a%5E%7B3%7D%2Ba%5E%7B2%7D%2Bb%5E%7B3%7D-b%5E%7B2%7D.%5C%5C%0A%2662%E3%80%81x%5E6-x%5E4-27y%5E6%2B9y%5E4.%5C%5C%0A%2663%E3%80%81xz-yz-x%5E%7B2%7D-y%5E%7B2%7D%2B2xy.%5C%5C%0A%2664%E3%80%81%20x%5E%7B2%7D-4xy%2B4y%5E%7B2%7D-z%5E%7B2%7D-2z-1.%5C%5C%0A%2665%E3%80%81x%5E4-8x%5E2-9.%0A%5Cend%7Baligned%7D

化简(66~70):

%5Csmall%5Cbegin%7Baligned%7D%0A%2666%E3%80%81%5Cfrac%7Ba%5E2-2ab%2Bb%5E2-a%2Bb%7D%7Ba%5E2-b%5E2%7D.%5C%5C%0A%2667%E3%80%81%5Cfrac%7B3y-3x%2B9x%5E2-9y%5E2%7D%7Bx%5E3-y%5E3%7D.%5C%5C%0A%2668%E3%80%81%5Cfrac%7B1-3x%2B3x%5E2-x%5E3%7D%7Bx%5E4-2x%5E2%2B1%7D.%5C%5C%0A%2669%E3%80%81%5Cfrac%7B6a%5E3%2B18a%5E2-60a%7D%7B15a%5E4%2B90a%5E3%2B75a%5E2%7D.%5C%5C%0A%2670%E3%80%81%5Cfrac%7B%5Cfrac1%7Bx%5E2%7D-%5Cfrac3x%2B4%7D%7B-%5Cfrac3%7Bx%5E2%7D-%5Cfrac1x%2B1%7D.%0A%5Cend%7Baligned%7D

演算(71~76):

%5Csmall%5Cbegin%7Baligned%7D%0A%2671%E3%80%81%5Cleft(%5Cfrac%7B3x%5E2%2B1%7D%7Bx%5E5-1%7D-%5Cfrac%7Bx-1%7D%7Bx%5E2%2Bx%2B1%7D%5Cright)%5Cleft(1%2B%5Cfrac%7Bx%2B1%7D%7Bx%7D-%5Cfrac%7Bx%5E2%2B5x%7D%7Bx%5E2%2Bx%7D%5Cright).%5C%5C%0A%2672%E3%80%81%5Cleft(%5Cfrac%7B2a%7D%7B2a%2Bb%7D-%5Cfrac%7B4a%5E2%7D%7B4a%5E2%2B4ab%2Bb%5E2%7D%5Cright)%5Cdiv%5Cleft(%5Cfrac%7B2a%7D%7B4a%5E2-b%5E2%7D%2B%5Cfrac%7B1%7D%7Bb-2a%7D%5Cright).%5C%5C%0A%2673%E3%80%81%5Cleft%5B%5Cfrac%7Bm%5E2-n%5E2%7D%7Bm%5E2%2B2mn%2Bn%5E2%7D%2B%5Cfrac%7B2%7D%7Bmn%7D%5Cdiv%5Cleft(%5Cfrac%7B1%7D%7Bm%7D%2B%5Cfrac%7B1%7D%7Bn%7D%5Cright)%5E2%5Cright%5D%5Cdiv%5Cfrac%7B1%7D%7Bm%2Bn%7D.%5C%5C%0A%2674%E3%80%81%5Cleft%5B%5Cfrac%7Ba%5E2%7D%7Ba%5E2-b%5E2%7D-%5Cfrac%7Ba%5E2b%7D%7Ba%5E2%2Bb%5E2%7D%5CBig(%5Cfrac%7Ba%7D%7Bab%2Bb%5E2%7D%2B%5Cfrac%7Bb%7D%7Ba%5E2%2Bab%7D%5CBig)%5Cright%5D%5Ctimes%5Cfrac%7Ba-b%7D%7Bb%7D.%5C%5C%0A%2675%E3%80%81%5Cleft%5B%5Cfrac%7B2%7D%7B3x%7D-%5Cfrac%7B2%7D%7Bx%2By%7D%5CBig(%5Cfrac%7Bx%2By%7D%7B3x%7D-x-y%5CBig)%5Cright%5D%5Cdiv%5Cfrac%7Bx-y%7D%7Bx%7D.%5C%5C%0A%2676%E3%80%81%5Cleft(a-%5Cfrac%7B4ab%7D%7Ba%2Bb%7D%2Bb%5Cright)%5Cdiv%5Cleft(%5Cfrac%7Ba%7D%7Ba%2Bb%7D-%5Cfrac%7Bb%7D%7Bb-a%7D-%5Cfrac%7B2ab%7D%7Ba%5E4-b%5E4%7D%5Cright).%0A%5Cend%7Baligned%7D

依照下面的叙述列出代数式(77~85):

77、两数 a 与 b 的和的平方除以它们的倒数的和。

78、两数 a 与 b 的比与它的反比的和的平方。

79、一个两位数,它的个位数上的数是 a,它的十位数上的数是个位数上的数的平方。

80、一个三位数,它的十位数上的数是 x,它的个位数上的数比十位数上的数的平方小 4,它的百位数上的数比个位数上的数小 2  。

81、a 与 b 的和的绝对值加上它们的绝对值的和。

82、a 与 b 的差的绝对值加上它们的绝对值的和。

83、两个数 a 与 b 的倒数的比的反比。

84、一个边长是 a 的正方形的周长。

85、一个周长是 a 的正方形的面积。

如 m、n 是自然数,演算下列各题(86~94):

%5Csmall%5Cbegin%7Baligned%7D%0A%2686%E3%80%81(a%5E%7Bm%7D)%5E%7B2%7D%C2%B7(a%5E%7Bn%7D)%5E%7B3%7D.%5C%5C%0A%2687%E3%80%81(a%5E%7Bm%2B1%7Db%5E%7Bn%2B2%7D)%5E%7B2%7D.%5C%5C%0A%2688%E3%80%81a%5E%7B2m%2Bn%7D%5Cdiv%20a%5E%7Bm%2Bn%7D.%5C%5C%0A%2689%E3%80%81a%5E%7B2m%2B3n%7D%5Cdiv(a%5E%7Bm%2Bn%7D)%5E2.%5C%5C%0A%2690%E3%80%81(a%5E%7Bm%2B1%7D)%5E2%5Cdiv(a%5E%7B2m%2B1%7D).%5C%5C%0A%2691%E3%80%81(a%5Em%2Bb%5En)%5E2.%5C%5C%0A%2692%E3%80%81(a%5Em-b%5En)%5E2.%5C%5C%0A%2693%E3%80%81(a%5Em%2Bb%5En)(a%5Em-b%5En).%5C%5C%0A%2694%E3%80%81(a%5Em-b%5En)%5E3.%0A%5Cend%7Baligned%7D

如 m、n 是自然数,分解下列因式(95~100):

%5Csmall%5Cbegin%7Baligned%7D%0A%2695%E3%80%81a%5E%7B2m%7D%2B2a%5Em%2B1.%5C%5C%0A%2696%E3%80%81a%5E%7B4m%7D-b%5E%7B8n%7D.%5C%5C%0A%2697%E3%80%81a%5E%7B3m%7D%2Bb%5E%7B6n%7D.%5C%5C%0A%2698%E3%80%81a%5E%7B2m%2B2%7D-2a%5E%7Bm%2B2%7D%2Ba%5E2.%5C%5C%0A%2699%E3%80%81a%5E%7B3m%2B6%7D%2Ba%5E3b%5E3.%5C%5C%0A%26100%E3%80%81a%5E%7B3m%2B3%7D-a%5E2b%5E%7B3m%7D.%0A%5Cend%7Baligned%7D

【答案】


【种花家务·代数】1-6-10总复习题(代数第一册)『数理化自学丛书6677版』的评论 (共 条)

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