(4a³b-10b³)+(-3a²b²+10b³)=
(4a³b-10b³)+(-3a²b²+10b³)=(4x²y-5xy²)-(3x²y-4...
(4a³b-10b³)+(-3a²b²+10b³)=
(4x²y-5xy²)-(3x²y-4xy²)-(3x²y-4xy²)=
5a²-[a²+(5a²-2a)-2(a²-3a)]=
15+3(1-a)-(1-a-a²)+(1-a+a²-a³)=
(4a²b-3ab)+(-5a²b+2ab)=
(6m²-4m-3)+(2m²-4m+1)=
3x²-[5x-(2/1x-3)+2x²]=
在线等 正确+50 展开
(4x²y-5xy²)-(3x²y-4xy²)-(3x²y-4xy²)=
5a²-[a²+(5a²-2a)-2(a²-3a)]=
15+3(1-a)-(1-a-a²)+(1-a+a²-a³)=
(4a²b-3ab)+(-5a²b+2ab)=
(6m²-4m-3)+(2m²-4m+1)=
3x²-[5x-(2/1x-3)+2x²]=
在线等 正确+50 展开
1个回答
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(4a³b-10b³)+(-3a²b²+10b³)=4a³b-3a²b²
(4x²y-5xy²)-(3x²y-4xy²)-(3x²y-4xy²)=-2x²y+3xy²
5a²-[a²+(5a²-2a)-2(a²-3a)]=a²-4a
15+3(1-a)-(1-a-a²)+(1-a+a²-a³)=18-3a+2a²-a³
(4a²b-3ab)+(-5a²b+2ab)=-a²b-ab
(6m²-4m-3)+(2m²-4m+1)=8m²-8m-2
3x²-[5x-(2/1x-3)+2x²]=x²-3x-3
(4x²y-5xy²)-(3x²y-4xy²)-(3x²y-4xy²)=-2x²y+3xy²
5a²-[a²+(5a²-2a)-2(a²-3a)]=a²-4a
15+3(1-a)-(1-a-a²)+(1-a+a²-a³)=18-3a+2a²-a³
(4a²b-3ab)+(-5a²b+2ab)=-a²b-ab
(6m²-4m-3)+(2m²-4m+1)=8m²-8m-2
3x²-[5x-(2/1x-3)+2x²]=x²-3x-3
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