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Let $f (x) = 2 x^{2} + 2$ $f(x)=2x^2+2$ , how do you find f(6)?

1 Answer

Mar 15, 2018

$f (6) = 74$ $f(6)=74$

Explanation:

If $f (x) = 2 x^{2} + 2$ $f(color(red)x)=2color(red)x^2+2$
then
$XX f (6) = 2 \cdot 6^{2} + 2$ $color(white)("XX")f(color(red)6)=2 * color(red)6^2+2$

$XXXXX = 2 \cdot 36 + 2$ $color(white)("XXXXX")=2 * 36 + 2$

$XXXXX = 74$ $color(white)("XXXXX")=74$

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