Question

F(x)=-x^2+x-17 find f (-8)

Answer 1

Answer:

• f(-8) = -89

Given :

• f(x)=-x^2+x-17

To find :

• Value of f(-8)

Solution :

Inserting the value of x in the function,

we get :

• f(-8) = -(-8)^2 + (-8) -17
• f(-8) = -64 -8 -17
• f(-8) = -89

Thus, the value of f(-8) = -89.

Answer 2

f(-8) = -89

Explanation:

To find the value of f(-8), we can substitute x = -8 into function f(x):

`\begin{aligned}f(-8)&=-(-8)^2+(-8)-17\\&=-64-8-17\\&=-72-17\\&=-89\end{aligned}`

Therefore, the value of f(-8) is:

`\Large\boxed{\boxed{-89}}`