SOLUTION: How would you write (-3x)^-2 using positive exponents and simplified?

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Question 40828: How would you write (-3x)^-2 using positive exponents and simplified?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Negative exponents in a numerator become positive exponents in the denominator, so we get
(-3x)^-2 =
1 / (-3x)^2 =
1 / 9x^2