Question

Which is f(5) for the function -2x

Answer 1

Given:

Function:

`f(x)=-2 x^(2)+2 x-3`

To find:

f(5)

Solution:

`f(x)=-2 x^(2)+2 x-3`

Substitute x = 5 in the above function.

`f(5)=-2 (5)^(2)+2 (5)-3`

`=-2 (25)+10-3`

`=-50+10-3`

`=-40-3`

`=-43`

Therefore, f(5) = -43.