correct

correct(3ab^5)^2(a^4b^6)

I got 9a^6b^16

not -1.(-2fg^2h^7)^4

I got -16f^4g^8h^28

You forgot the first(3xy)^3(4x^5y^2)^2

I got 432x^13y^4

, and 64(4)= 256. . And notice that the "-" is outside any power.Also was wondering if anyone can help me with this probelm

-(4x)^3(2x)^2(x^5)^5