摘要:5.化简: =.A.2 B.4 C.4a D.2a2+2
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化简:
(1)2(2a-3b)+3(2b-3a)
(2)(4a2b-5ab2)-(3a2b-4ab2)
(3)2a2b+3a2b-
a2b
(4)3a2-[8a-(4a-7)-2a2].
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(1)2(2a-3b)+3(2b-3a)
(2)(4a2b-5ab2)-(3a2b-4ab2)
(3)2a2b+3a2b-
1 | 2 |
(4)3a2-[8a-(4a-7)-2a2].