Question

Given f(x)=3x2+4x and g(x)=2x2−x+1 .

Answer 1

3z^2 + 4x + 2x^2 - x + 1

5x^2 + 3x + 1: the answer is c

Answer 2

Answer:

Hence, the value of (f+g)(x) is:

                 $5x^2+3x+1$

Step-by-step explanation:

We are given a function f(x) in terms of variable x as:

$f(x)=3x^2+4x$

and function g(x) in terms of variable x as:

$g(x)=2x^2-x+1$

Now we are asked to find the value of (f+g)(x)

We know that:

$(f+g)(x)=f(x)+g(x)$

Hence, on putting the value of both the functions:

$(f+g)(x)=3x^2+4x+2x^2-x+1$

on combining like terms we get:

$(f+g)(x)=3x^2+2x^2+4x-x+1$

$(f+g)(x)=5x^2+3x+1$

                  The answer is:

                       $5x^2+3x+1$