Question

-4x^3y(x^2y^9)^3

Answer 1

-4x^(3)y(x^(2)y^(9))^(3)

Multiply 2 by 3 to get 6.
(-4x^(3)y*x^(6)y^(9*3))

multiply 9 by 3 to get 27.
=-4x^(3)y*x^(6)y^(27)

=(-4x^(9)y^(28))