Find F(-2) Given That f(x)=4x^2-2x-25

Question

Solve 

Answer 1

f(x) = 4x² -2x -25

 

To find f(-2) just replace x with -2 in the equation

 

f(-2) = 4(-2)² -2(-2) - 25

       = 4(4) + 4 - 25

       = -5