题目内容
(1)
×
+
×
-
(2)x2 •(x2)3÷x5
(3)-3xy2z•(x2y)2
(4)(a+b)2-(a-b)2.
| 1 |
| 3 |
| 36 |
| 1 |
| 5 |
| 100 |
1+
|
(2)x2 •(x2)3÷x5
(3)-3xy2z•(x2y)2
(4)(a+b)2-(a-b)2.
(1)原式=
×6+
×10-
=2+2-
=
;
(2)原式=x2 •x6÷x5=x3;
(3)原式=-3xy2z•x4y2=-3x5y4z;
(4)原式=[(a+b)+(a-b)][(a+b)-(a-b)]=4ab.
| 1 |
| 3 |
| 1 |
| 5 |
| 5 |
| 4 |
| 5 |
| 4 |
| 11 |
| 4 |
(2)原式=x2 •x6÷x5=x3;
(3)原式=-3xy2z•x4y2=-3x5y4z;
(4)原式=[(a+b)+(a-b)][(a+b)-(a-b)]=4ab.
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