Question

Given that f(x) = x squared + 3x- 28 and g(x) = x + 7, find f(x) + g(x) andexpress the result in standard form.

Answer 1

`f(x)+g(x)=x^2+4x-21`

Here, we want to find the result of adding the two functions

Matematically, we have;

`\begin{gathered} f(x)=x^2\text{ + 3x - 28} \\ g(x)\text{ = x + 7} \\ \\ f(x)+g(x)=x^2+3x-28+x+7=x^2+3x+x-28+7=x^2+4x-21 \end{gathered}`