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Aleks04 [339]
3 years ago
10

Simplify the exponential expression. (−8) 2 =

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
6 0

Answer:

-16

Step-by-step explanation:

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Solve for x.<br> 2x² +21x-61 = (x+7)²<br><br> Please
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Answer:

x = \frac{-7 +\sqrt{489} }{2}

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Step-by-step explanation:

2x² +21x-61 = (x+7)²

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2x² + 21x - 61 = x² + 14x +49

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x = \frac{-7 +- \sqrt{7^{2}-4(1)(-110) } }{2(1)}

solve

x = \frac{-7 +- \sqrt{49-4(1)(-110) } }{2}

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The second option is correct, I,e what you've chosen

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cestrela7 [59]

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$6.22

Step-by-step explanation:

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PLEASE HELP
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If you use/make a number line, then you will see that the answer is -18 or a. When using a number line, negative = ← and positive = →.
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