Question

F(x)= 2x^2 + 5x - 17, find f(-1).

Answer 1

-20

Explanation:

f(x)= 2x^2 + 5x - 17,

f(-1)

Let x = -1

f(-1)= 2 *(-1)^2 + 5(-1) - 17

= 2 *1 -5 -17

= 2 -22

= -20