已知:ab=5,a-b=2,3a^2b-3ab^2
问题描述:
已知:ab=5,a-b=2,3a^2b-3ab^2
答
3a^2b-3ab^2
=3ab(a-b)
=30
已知:ab=5,a-b=2,3a^2b-3ab^2
3a^2b-3ab^2
=3ab(a-b)
=30