Question

If f(x) = 2x2 + 3x and g(x) = x – 2, what is (f + g)(2)?

Answer 1

$f(x) = 2x^2+3x$
$g(x) = x-2$
First find (f + g)
$(f+g) = 2x^2+3x+x-2$
$(f+g)=2x^2+4x-2$
Now multiply by 2.
$(f+g)(2)=2(2x^2)+2(4x)+2(-2)$
$(f+g)(2) = 4x^2+8x-4$