题目内容
化简:
(1)
-
(2)(
)2÷(
)3
(1)
| x2-x-2 |
| x2-4 |
| x2+2x |
| x2+2x+1 |
(2)(
| 3n |
| 2m |
| m |
| 2n2 |
(1)原式
•
(3分)=
;(4分)
(2)原式=(
)÷(
)=
×
=
.(4分)
| (x-2)(x+1) |
| (x+2)(x-2) |
| x(x+2) |
| (x+1)2 |
| 1 |
| x+1 |
(2)原式=(
| 9 n2 |
| 4 m2 |
| m3 |
| 8 n6 |
| 9 n2 |
| 4 m2 |
| 8 n6 |
| m3 |
| 18 n8 |
| m5 |
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