Question

Select the correct answer.If (f+ gxx) = 3x²+2x-1 and g(x)=2x-2, what is x)?OA. 3x²+1OB. 3x²-1OC 3x²+4OD. 3²-4OE x^2 -2

Answer 1

Given:

`\begin{gathered} (f+g)(x)=3x^2+2x-1 \\ g(x)=2x-2 \end{gathered}`

Required:

`f(x)`

Explanation:

`\begin{gathered} (f+g)(x)=\text{ }3x^2+2x-1 \\ f(x)+g(x)=3x^2+2x-1 \\ f(x)_+2x-2=3x^2+2x-1 \\ f(x)=3x^2+2x-1-2x+2 \\ \end{gathered}`
`f(x)=3x^2+1`

Final Answer:

`f(x)=\text{ }3x^2+1`