(-a/b)^2/(2a^2/5b)^2*a/5b
问题描述:
(-a/b)^2/(2a^2/5b)^2*a/5b
答
=a²/b²×(25b²/4a^4)×a/5b
=5/4ab
(-a/b)^2/(2a^2/5b)^2*a/5b
=a²/b²×(25b²/4a^4)×a/5b
=5/4ab