已知:a-b=-3,ab=2,求a^2b-ab^2的值
问题描述:
已知:a-b=-3,ab=2,求a^2b-ab^2的值
答
a^2b-ab^2
=ab(a-b)
=2×(-3)
=-6
已知:a-b=-3,ab=2,求a^2b-ab^2的值
a^2b-ab^2
=ab(a-b)
=2×(-3)
=-6