SOLUTION: given the function f(x)=-3x^2+5x find F(-x)

Algebra ->  Functions -> SOLUTION: given the function f(x)=-3x^2+5x find F(-x)      Log On


   

Question 1155243: given the function f(x)=-3x^2+5x
find F(-x)
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
to find f(-x) given f(x) = -3x^2 + 5x, you replace x with -x.
f(-x) would be equal to -3 * (-x)^2 + 5 * (-x) which becomes:
f(-x) = -3x^2 - 5x
the x^2 term windes up being the same because (-x)^2 = x^2