What is f(g(-4))?

2 ⤊

f(x)=x^2
g(x)=x^2-x
d(x)=2x^2-x
e(x)=5-x^2

2007-05-03 03:16:32 · 2 answers · asked by Audrena S 1 in Science & Mathematics ➔ Mathematics

g(-4) = 16+4 = 20
f(20) = 20*20 = 400

Ans: 400

2007-05-03 03:25:05 · answer #1 · answered by Anonymous · 1⤊ 0⤋

There's no need for d(x) or e(x)

g(x) = x^2 - x
g(-4) = (-4)^2 - (-4)
= 16 + 4 = 20

f(g(-4)) = f(20)

Now, f(x) = x^2
f(20) = 20^2 = 400.

2007-05-03 03:28:20 · answer #2 · answered by Akilesh - Internet Undertaker 7 · 1⤊ 0⤋