Question

Given f(x) = 3x2 + 7x and g(x) = 2x2 - X - 1, find f(x) + g(x).

Answer 1

f(x) is a fancy way of saying y. So for now I will refer to y.

f(x)

y=3x+2+7x

g(x)

y=2x2-x-1

3x+2+7x+(2x2)-x-1 = f(x)+g(x)

Now lets add

10x+2+4-x-1=f(x)+g(x)

9x+5=f(x)+g(x)

Brainliest/Heart would help

Answer 2

I believe the answer is.

5x^2 + 6x - 1