SOLUTION: Hello, I'm reviewing for a final and need some help checking this problem: Simplify each expression. Leave only positive exponents in your answers: (3a^-1b^2)^-1 thanks!

SOLUTION: Hello, I'm reviewing for a final and need some help checking this problem: Simplify each expression. Leave only positive exponents in your answers: (3a^-1b^2)^-1 thanks!

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Question 195031: Hello, I'm reviewing for a final and need some help checking this problem:
Simplify each expression. Leave only positive exponents in your answers:
(3a^-1b^2)^-1
thanks!
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
( 3a^-1b^2)^-1
( 3b^2/a) ^-1
a / ( 3b^2 )
.
checking, let a=1,,,b=2,, substitute in original and answer, both give 1/12,,, ok
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