Question

化简求值：-ab*(a^2次方b^5次方-ab^3-b)其中ab^2=-2

Answer 1

-ab*(a^2b^5-ab^3-b)

=-a^3b^6+a^2b^4+ab^2

=-(ab^2)^3+(ab^2)^2+ab^2

=-(-2)^3+(-2)^2+(-2)

=8+4-2

=10

望采纳