jblackwell5 jblackwell5

14-06-2020
Mathematics

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If f(x) = -2x^2 - 2x, then f(-2) = ?

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jimthompson5910 jimthompson5910

14-06-2020

Answer is -4

Explanation:

Everywhere you see an x, replace it with (-2) as shown below. Use PEMDAS to simplify.

f(x) = -2x^2 - 2x

f(-2) = -2(-2)^2 - 2(-2)

f(-2) = -2(4) - 2(-2)

f(-2) = -8 + 4

f(-2) = -4

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