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I am not getting how to solve this problem. Help Please?

I am not getting how to solve this problem. Help Please?-example-1

1 Answer

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Explanation:

The equation shows f(x)....what to do with the value 'x'

When you want f(-4) put in -4 where 'x' is in the equation

f(-4) = (-4)^2 + 4 = 20

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