计算:(1)[(a5)3-(b3)2]5 (2)(x2-xm)3÷x2m.
题型:解答题难度:一般来源:不详
计算: (1)[(a5)3-(b3)2]5 (2)(x2-xm)3÷x2m. |
答案
(1)原式=(a15•b6)5 =a75b25;
(2)原式=x3m+6÷x2m =xm+6. |
举一反三
(3a+2b)(3a-2b)+(a-2b)2,其中a=-,b=1. |
(2a+3b)(a-2b)-(2b-a)(2a+3b). |
[(x+y)2-(x-y)2]•(3x-y)(y+3x)(y2+9x2),其中x=1,y=-3. |
3(x-2)2(x-7)+11(2-x)(7-x),其中x=1. |
9xy(x-y)(x+1)-3y(x-y)(3x+2y)+6y2(x-y)(x+1),其中x=-,y=2. |
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