Question

Find f (-2) if f (x) = x² +2x-6

Answer 1

given the function :

`f(x)=x^2+2x-6`

to find f(-2), substitute with x = -2 at the given function

`\begin{gathered} x=-2 \\ f(-2)=(-2)^2+2\cdot-2-6 \\ f(-2)=4-4-6 \\ \\ f(-2)=-6 \end{gathered}`

so, the answer is : f(-2) = -6