Question

In the problem below, $f\left(x\right)=x^2$ and $g\left(x\right)=4x-2$
Find the following function: $(f+g)\left(x\right)$

• A. $x^2+4x-2$
• B. $x^2-4x-2$
• C. $x^2-4x+2$
• D. $x^2-2$

Answer 1

The correct option is A $x^2+4x-2$

Given, $f\left(x\right)=x^2$ and $g\left(x\right)=4x-2$

We need to find $(f+g)\left(x\right)$
$\therefore (f+g)\left(x\right)=f\left(x\right)+g\left(x\right)=x^2+4x-2$