SOLUTION: how do you simplify (9x^-4y^2) ^-1/2

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Question 303447: how do you simplify (9x^-4y^2) ^-1/2
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(9x^-4y^2) ^-1/2
= 1/ sqrt (9x^2-4y^2)
= 1/ sqrt {3x-2y)(3x+2y)}