Question

F(x) = 2x² + x – 4
Find f(-10)
NEED IT FAST

Answer 1

`f(-10)=186`

Explanation:

We can use substitution to find the value of
`f(-10)`.

`f(x) = 2x^2+x-4`

`f(-10) = 2(-10)^2-10-4`

`=200-10-4`

`=186`

∴
`f(-10) =186`

Hope this helps :)

Answer 2

The value of f(-10) is equal to 186.

Explanation:

We are given the function:

`f(x) = 2x^2 + x - 4`

We are told to find the value of:

`f(-10)`

If we pay close attention, we can see a transition between:

`f(x) \rightarrow f(-10)`

We have turned x into -10, making x = -10.

Therefore, we can change the value of x in the entire function to -10.

`f(-10)=2(-10)^2+(-10) - 4\\\\f(-10) = 200 - 10 - 4\\\\f(-10) = 186`

Therefore, f(-10) = 186.