问题标题:
初一上册数学化简计算化简求过程:(1)(4a²b-10b³)+(-3a²b²+10b³)(2)(4x²y-5xy²)-(3xy²-4xy²)(3)5a²-[a²+(5a²-2a)-2(a²-3a)](4)15+3(1-a)-(1-a-a
问题描述:
初一上册数学化简计算
化简求过程:(1)(4a²b-10b³)+(-3a²b²+10b³)(2)(4x²y-5xy²)-(3xy²-4xy²)(3)5a²-[a²+(5a²-2a)-2(a²-3a)](4)15+3(1-a)-(1-a-a²)+(1-a+a²-a³)(5)(4a²b-3ab)+(-5a²b+2ab)(6)(6m²-4m-3)+(2m²-4m+1)在线等啊!!!!
谭群华回答:
(1)(4a²b-10b³)+(-+10b³)(2)(4x²y-5xy²)-(3xy²-4xy²)
=4a²b-10b³-3a²b²+10b³=4x²y-5xy²-3xy²+4xy²
=a²b=4x²y-4xy²
(3)5a²-[a²+(5a²-2a)-2(a²-3a)](4)15+3(1-a)-(1-a-a²)+(1-a+a²-a³)
=5a²-[a²+5a²-2a-2a²+6a]=15+3-3a-1+a+a²+1-a+a²-a³
=5a²-a²-5a²+2a+2a²-6a=2a+a²+a³+18
=a²-4a
(5)(4a²b-3ab)+(-5a²b+2ab)(6)(6m²-4m-3)+(2m²-4m+1)
=4a²b-3ab-5a²b+2ab=6m²-4m-3+2m²-4m+1
=-a²b-ab=8m²-8m+1
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