#### Problem Statement: ECE Board April 1991

Simplify: ((x^2 y^3 z^(-2) )^(-3) (x^(-3) yz^3 )^(-1/2))/(xyz^(-3) )^(-5/2)

- A. 1/(x^2 y^7 z^5 )
- B. 1/(x^2 y^7 z^3 )
- C. 1/(x^2 y^5 z^7 )
- D. 1/(x^5 y^7 z^2 )

#### Problem Answer:

((x^2 y^3 z^(-2) )^(-3) (x^(-3) yz^3 )^(-1/2))/(xyz^(-3) )^(-5/2) is equal to **1/(x^2 y^7 z^3 )**.

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