已知-4x^(m+2)y^(3m-n)÷[-2x^(5m)y^(2m+n)]的商与-(1/2)x^3y^3是同类项,求m

学习时间:2026-03-30 14:15:50 阅读：3993

已知-4x^(m+2)y^(3m-n)÷[-2x^(5m)y^(2m+n)]的商与-(1/2)x^3y^3是同类项,求m+n

细腻的耳机

2026-03-30 14:15:50

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-4x^(m+2)y^(3m-n)÷[-2x^(5m)y^(2m+n)]=2x^(m+2-5m)y^(3m-n-2m-n)=2x^(2-4m)y^(m-2n)与-(1/2)x^3y^3是同类项所以2-4m=34m=-1m=-1/4m-2n=3n=-13/8m+n=-1/4-13/8=-15/8