Asked by john101

I am confused the question says: Find f(-2) given that f(x)=4x^2-2x-25....please help...
Answered by drwls
Plug in -2 where the x is in f(x), and do the numbers.
f(-2) = 4*(-2)^2 -2*(-2) - 25
= 16 +4 -25 = -5