计算:8m2-[4m2-2m-(2m2-5m)].
问题描述:
计算:8m2-[4m2-2m-(2m2-5m)].
答
原式=8m2-4m2+2m+2m2-5m
=6m2-3m.
计算:8m2-[4m2-2m-(2m2-5m)].
原式=8m2-4m2+2m+2m2-5m
=6m2-3m.