Question

Plz help!! Will give brainliest!!
Given f (x) = 3x^2 + 4x and g(x) = 2x^2 - x + 1 .

What is (f + g) (x) ?

1) 6x^2 - 4x + 1
2) x^2 + 5x - 1
3) -x^2 - 5x - 1
4) 5x^2 + 3x + 1

Answer 1

Answer:

It is 4) which is $5x^2 + 3x + 1$

Step-by-step explanation:

Simplify step-by-step.

$3x^{2} +4x+2x^{2} -x+1$

$=3x^{2} +4x+2x^{2} +-x+1$

Combine Like Terms:

$=3x^{2} +4x+2x^{2} +-x+1$

$=(3x^{2} +2x^{2} )+(4x+x)+(1)$

$=5x^{2} +3x+1$