题目内容
计算:
(1)
•
÷
(2)(
)•(
)÷(
)
(3)(
)2•(
)3
(4)(
)3÷(b-a)2•(
)2
(5)(-
)2•(
)3
(6)(
)÷(-ab4)•(
)3.
(1)
| 2x2y |
| 3mn2 |
| 5m2n |
| 4xy2 |
| 5xym |
| 3n |
(2)(
| a2 |
| -b |
| c2 |
| -ab |
| bc |
| a |
(3)(
| 2x |
| 3y |
| 3y |
| 4x |
(4)(
| a-b |
| ab |
| ab |
| b-a |
(5)(-
| 2a |
| b2 |
| b2 |
| 4a4 |
(6)(
| a |
| b |
| b2 |
| a |
(1)原式=
•
•
=
•
=
;
(2)原式=
•
=
;
(3)原式=
•
=
;
(4)原式=
•
•
=
•
=
;
(5)原式=
•
=
;
(6)原式=
•
•
=
•
=-
.
| 2x2y |
| 3mn2 |
| 5m2n |
| 4xy2 |
| 3n |
| 5xym |
=
| 5xm |
| 6ny |
| 3n |
| 5xym |
=
| 1 |
| 2y2 |
(2)原式=
| ac2 |
| b2 |
| a |
| bc |
=
| a2c |
| b3 |
(3)原式=
| 4x2 |
| 9y2 |
| 27y3 |
| 64x3 |
=
| 3y |
| 16x |
(4)原式=
| (a-b)3 |
| a3b3 |
| 1 |
| (a-b)2 |
| a2b2 |
| (a-b)2 |
=
| a-b |
| a3b3 |
| a2b2 |
| (a-b)2 |
=
| 1 |
| (a-b)ab |
(5)原式=
| 4a2 |
| b4 |
| b6 |
| 64a12 |
=
| b5 |
| 16a10 |
(6)原式=
| a |
| b |
| 1 |
| -ab4 |
| b6 |
| a3 |
=
| 1 |
| -b5 |
| b6 |
| a3 |
=-
| b |
| a3 |
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