题目内容
计算下列各小题:
(1)|-5|-
+
-(2012-
)0
(2)(4ab3+6a3b-8a3b2)÷2ab-(a+b)(3a+2b)
(1)|-5|-
| 16 |
| 3 | 27 |
| π |
| 3 |
(2)(4ab3+6a3b-8a3b2)÷2ab-(a+b)(3a+2b)
(1)原式=5-4+3-1
=3;
(2)原式=2b2+3a2-4a2b-(3a2+2ab+3ab+2b2)
=2b2+3a2-4a2b-3a2-2ab-3ab-2b2
=-4a2b-5ab.
=3;
(2)原式=2b2+3a2-4a2b-(3a2+2ab+3ab+2b2)
=2b2+3a2-4a2b-3a2-2ab-3ab-2b2
=-4a2b-5ab.
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