Question 398199: (2/9) to power of -2. Simplify the expression.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! (2/9) to power of -2. Simplify the expression.
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The negative in the exponent tells you to invert.
The 2 in the exponent tells you to square.
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You may perform these instructions in any order.
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(2/9)^(-2)
If you invert 1st you get:
(9/2)^2
You then square to get:
81/4
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If you square 1st you get:
(4/81)^(-1)
You then invert to get:
81/4
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Notice, the answers are the same no
matter what order you follow.
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cheers,
stan H.
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