Given: f(x) = x2 + 3x – 5 and 2g(x) = 2x – 8. Find (f + g) (x).x2 + 4x – 9x2 + 5x – 13x2 + 7x – 21x2 + 3x

Xmhafiz asked Apr 5, 2023

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25 votes

Given: f(x) = x2 + 3x – 5 and 2g(x) = 2x – 8. Find (f + g) (x).x2 + 4x – 9x2 + 5x – 13x2 + 7x – 21x2 + 3x – 3

Xmhafiz asked Apr 5, 2023

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14 votes

Given
$\begin{gathered} f(x)=x^2+3x-5 \\ 2g(x)=2x-8 \end{gathered}$
g(x)=x-4

Solution
$\begin{gathered} \left(f+g\right)x=x^2+3x-5+x-4 \\ collect\text{ like terms} \\ (f+g)x=x^2+4x-9 \\ \end{gathered}$ The final answerOption A

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