Question

Simplify:

(3y)^4 (times) y^-2

A) 1/2y^2
B) 3y^2
C) 1/81 y^2
D) 81 y^2

Answer 1

`(3y)^(4) * y^(-2)`


`((3y)(3y)(3y)(3y)) * (1)/(y^(2))`


`81y^(4) * (1)/(y^(2))`


`81y^(2)`

D. 81y²

Answer 2

`(3y)^4\cdot y^(-2)=81y^4\cdot y^(-2)=81y^(2)`