(a^3b-3a^2b^2+2ab^3)/(-1/2ab)
问题描述:
(a^3b-3a^2b^2+2ab^3)/(-1/2ab)
带次方的都是数字
答
原式=a^3b/(-1/2ab)-3a^2b^2/(-1/2ab)+2ab^3/(-1/2ab)
=-2a⁴b²+6a²b³-4a²b⁴