Question

Given the polynomial function below,find F(-9). F(x)=-x^2-10x-2

Answer 1

ANSWER

$f( - 9) = 7$

EXPLANATION

The given function is

$f(x) = - {x}^{2} - 10x - 2$

To find f(-9), we substitute x=-9 into the function to obtain:

$f( - 9) = - ( - 9) ^{2} - 10( - 9) - 2$

Simplify:

$f( - 9) = - 81 + 90- 2$

Simplify further;

$f( - 9) = 7$