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x^2 + 4x = 32

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x^2 + 4x = 32 [#permalink] New post   25 Jul 2022, 00:52
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\(𝑥^2 + 4𝑥 = 32
\)

Quantity A
Quantity B
4
8+sum of all possible values of x


A. Quantity A is greater
B. Quantity B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given

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C
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Re: x^2 + 4x = 32 [#permalink] New post   27 Jul 2022, 15:34
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Quote:
Just looking at it, it looks like whatever B is, it’s going to be larger than A. However, this is a quadratic equation equivalent to 𝑥2 +4𝑥 − 32 = 0. Factor into (x + 8)(x – 4) = 0. In order for this equation to equal 0, either x+ 8 = 0 or x – 4 = 0. So, x must equal to either -8 or 4, the sum of which is -4. -4 added to 8 gives 4.
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Re: x^2 + 4x = 32 [#permalink]
27 Jul 2022, 15:34
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