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Ilona989898
@Ilona989898
July 2022
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помогите 357 очень срочно пожалуйста СРОЧНО ПОМОГИТЕ !
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tavlamak
1) (a+b)*-(a²-ab+b²)=-(a³+b³)=-a³-b³
2) -x³-x²y+xy²+x²y+xy²-y³=x³+2xy²-y³
3)7a³+7a²+a²+a-a-1=7a³+8a²-1
4) 2m³+10m²-3m²-15m-2m-10=2m³-7m²-17m-10
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Answers & Comments
2) -x³-x²y+xy²+x²y+xy²-y³=x³+2xy²-y³
3)7a³+7a²+a²+a-a-1=7a³+8a²-1
4) 2m³+10m²-3m²-15m-2m-10=2m³-7m²-17m-10