Question

Plz help will mark brainliest ....Given f(x)=5x2−2x and g(x)=3x2+x−4 .

Answer 1

Answer:  The correct option is (C) $8x^2-x-4.$

Step-by-step explanation:  Given two functions f(x) and g(x) as follows :

$f(x)=5x^2-2x,\\\\g(x)=3x^2+x-4.$

We are to find the value of $(f+g)(x).$

We have

$(f+g)(x)\\\\=f(x)+g(x)\\\\=(5x^2-2x)+(3x^2+x-4)\\\\=5x^2-2x+3x^2+x-4\\\\=8x^2-x-4.$

Thus,

$(f+g)(x)=8x^2-x-4.$

Option (C) is the correct option.

Answer 2

It's the 3rd option. All your doing to me, is adding all the numbers straight down. I think you meant to write it like this: 8x² - x - 4