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Simplify: (3y)^4 (times) y^-2 A) 1/2y^2 B) 3y^2 C) 1/81 y^2 D) 81 y^2
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3 votes
Simplify:

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

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

User SISYN
by
7.5k points

2 Answers

3 votes

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


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


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


81y^(2)

D. 81y²
User Martin Sustrik
by
8.1k points
2 votes

(3y)^4\cdot y^(-2)=81y^4\cdot y^(-2)=81y^(2)
User Ujjawal Bhandari
by
7.6k points
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