(6m2n-6m2n2-3m2)÷(-3m2)

问题描述:

(6m2n-6m2n2-3m2)÷(-3m2

原式=6m2n÷(-3m2)-6m2n2÷(-3m2)-(3m2)÷(-3m2
=-2n+2n2+1.