Question and answer
Use Laws of exponents to answer this question. A student said that (9x)-² = - 81x². Is this student correct? Why or why not?
A student said that (9x)-² = - 81x². This student is not correct. (9x)^-2 = 1/(9x)^2 = 1/81x^2
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Asked 3/16/2011 3:36:18 PM
Updated 1/4/2015 12:55:41 AM
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A student said that (9x)-² = - 81x². This student is not correct.
(9x)^-2 = 1/(9x)^2 = 1/81x^2
Added 1/4/2015 12:55:41 AM
This answer has been confirmed as correct and helpful.
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Updated 6/2/2018 7:08:41 AM
1 Answer/Comment
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Added 6/2/2018 7:08:41 AM
This answer has been confirmed as correct and helpful.
Could you please simplify (5x^2y)^3 Thank you
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Updated 8/17/2014 8:09:54 PM
1 Answer/Comment
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