约分 (a³b+a²b²)/(a²+2ab+b²)(1)(a³b+a²b²)/(a²+2ab+b²)(2)-2mn²/-8m的五次方n的立方
问题描述:
约分 (a³b+a²b²)/(a²+2ab+b²)
(1)(a³b+a²b²)/(a²+2ab+b²)
(2)-2mn²/-8m的五次方n的立方
答
(a³b+a²b²)/(a²+2ab+b²)
=a^2b(a+b)/(a+b)^2
=a^2b/(a+b)
-2mn²/(-8m^5n^3)
=1/(4m^4n)