-4x的5m次方y的3m-n次方÷(-2x的m+2n次方y的2m+n次方)的商=-4x^5my^(3m-n)÷(-2x^(m+2n)y^(2m+n))=2x^(4m-2n)y^(m-2n)已知-4x的5m次方y的3m-n次方÷(-2x的m+2n次方y的2m+n次方)的商与-1/2x的6次方y的3次方是同类项4m...