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GRE Math Challenge #114- For what value of x

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GRE Math Challenge #114- For what value of x [#permalink] New post   15 May 2015, 11:55
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For what value of x will 8 + (x -3) 2 have the least value?

(A) –3
(B) 0
(C) 3
(D) 5
(E) 8
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A
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Re: GRE Math Challenge #114 [#permalink] New post   27 Aug 2015, 18:24
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Re: GRE Math Challenge #114- For what value of x [#permalink] New post   09 Jan 2022, 11:33
1
Plug-in numbers from the answer choices:

A: x = -3

8 + (-3-3)2 = 8 + (-6)(2) = 8 - 12 = -4

B: x = 0

8 + (0-3)2 = 8 + (-3)(2) = 8 - 6 = 2

C: x = 3

x + (3-3)2 = 8 + (0)(2) = 8 + 0 = 8

We don't need to plug in any more values; the answer choices get progressively larger the greater the x becomes. Answer choice A must be the least value.
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Re: GRE Math Challenge #114- For what value of x [#permalink]
09 Jan 2022, 11:33
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