Question

Find (ƒ – g)(x) where ƒ(x) = –x2, g(x) = –(x + 4)2.

Answer 1

(f - g)(x) = f(x) - g(x) = -x^2 - - (x + 4)^2 = -x^2 - -(x^2 + 8x + 16)

 =    -x^2 + x^2 + 8x + 16

=    8x + 16