How do you evaluate the function $f (x) = - | x + 4 | + x^{2}$ $f(x) = -|x+4|+x^2$ for $f (- 9)$ $f(-9)$ ?

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How do you evaluate the function $f (x) = - | x + 4 | + x^{2}$ $f(x) = -|x+4|+x^2$ for $f (- 9)$ $f(-9)$ ?

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Answer 1 · 2015-10-30T09:11:54

$f (- 9) = 76$ $f(-9)=76$

Explanation:

Substitute $- 9$ $-9$ into the equation everywhere there is an $x$ $x$ .
$f (- 9) = - | - 9 + 4 | + {(- 9)}^{2}$ $f(-9)= - abs(-9+4) + (-9)^2$
$= - | - 5 | + 81$ $= - abs(-5) + 81$
$= - 5 + 81$ $=-5+81$
$= 76$ $=76$

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How do you evaluate the function $f (x) = - | x + 4 | + x^{2}$ $f(x) = -|x+4|+x^2$ for $f (- 9)$ $f(-9)$ ?

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Explanation:

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