ab-(2ab-3a^2b)怎么算?
问题描述:
ab-(2ab-3a^2b)怎么算?
答
原式=ab-2ab+3a^2b
=-ab+3a^2b
ab-(2ab-3a^2b)怎么算?
原式=ab-2ab+3a^2b
=-ab+3a^2b