Question

For the polynomial function, find the requested value: f (x) = 10x2 − 4x − 5; f (−2)

Answer 1

So first we substitute -2 for x

f(-2) = 10(-2)^2 - 4(-2) - 5

f(-2) = 400 + 8 - 5

f(-2) = 400 + 3

f(-2) = 403

Explanation: