simplify. (y^7/z^6)^3?

Question

(y^7/z^6)^3

Answer 1

(y^7/z^6)^3
=y^21/z^18

Answer 2

(y^7)^3/(z^6)^3
=y^21/z^18

Answer 3

its easy, you will only multiply the exponents, you don't have to divide y^7 to z^6 because they don't have the similar variable so its impossible.....
anyway the answer is y^21/z^18

Answer 4

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Answer 5

y^21 / z^18 or y^21.z^(- 18)

Answer 6

(y^7/z^6)^3 = y^21/z^18

explanation:
(a^m)^n = a^(m*n) thus

(a^m/b^k)^n = a^mn/b^kn