If (f+g)(x)=3x^2+2x-1 and g(x)=2x-2 what is f(x).

asked Dec 1, 2017 16.9k views

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$f(x)=(f+g)(x)-g(x)\\ f(x)=3x^2+2x-1 -(2x-2)\\ f(x)=3x^2+2x-1 -2x+2\\ f(x)=3x^2+1\\$

Mthpvg answered Dec 2, 2017

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(f + g)(x) = 3x² + 2x - 1
g(x) = 2x - 2

(3x² + 2x - 1) - (2x - 2)
3x² + 2x - 2x - 1 + 2
3x² + 1

f(x) = 3x² + 1

Chila answered Dec 5, 2017

by Chila

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