21,536 views
3 votes
3 votes
F(x) = -x^2 - 10x - 13 Find f(-2)

User Dbaq
by
3.1k points

1 Answer

22 votes
22 votes

Answer: f(-2) = 3

The the below quadratic function


f(x)=-x^2\text{ - 10x - 13}

Find f(-2). To find f(-2) let x = -2


\begin{gathered} f(-2)=-(-2)^2\text{ - 10(-2) - 13} \\ f(-2)\text{ = -(4) -10(-2) - 13} \\ f(-2)\text{ = -4 + 20 - 13} \\ f(-2)\text{ = 16 - 13} \\ f(-2)\text{ = 3} \end{gathered}

User Stefan Hoth
by
3.3k points