Question

If f(x) = x^2 + 3x, find f(-3). *

Answer 1

The value of f(-3) is;

`f(-3)=0`

Step-by-step explanation:

Given that;

`f(x)=x^2+3x`

To get f(-3), we will substitute -3 for x in the given function f(x);

`\begin{gathered} f(x)=x^2+3x \\ f(-3)=(-3)^2+3(-3) \\ f(-3)=9^{}-9 \\ f\mleft(-3\mright)=0 \end{gathered}`

Therefore, the value of f(-3) is;

`f(-3)=0`