Should -3^2 be (-3)^2 or -(3^2)?

Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.
Hyacinth
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Should -3^2 be (-3)^2 or -(3^2)?

If I see -3^2 on a math placement test, should it be (-3)^2 (which equals 9) or -(3^2) (which equals -9). I read on a math web site that it should be the latter -- that the exponent makes the parentheses around 3^2 implicit. But a an instructional algebra book I have supplies answers to problems that make it apparent that the book is going with the former situation.

Thank you!

stapel_eliz
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It should definitely be the latter! The negative of a square is a negative value!

sio6627
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Re: Should -3^2 be (-3)^2 or -(3^2)?

(-3)^2 however is a positive value because a negative times a negative is a positive?
(-3) * (-3) = 9

right? -- rather than - (3^2) which is - (9) = -9

-sio.

stapel_eliz
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(-3)^2 however is a positive value because a negative times a negative is a positive?
Yes; (-3)2 = (-3)(-3) = +9. But the poster was asking about -32, which is -(32) = -(3)(3) = -9.