Let f(x) = x2 − 4 and g(x) = 4x − 3, how do you find (f − g)(−6)?

2 Answers
Mar 31, 2018

59

Explanation:

(fg)(x)=f(x)g(x). so (fg)(x)=x24x1. Plugging in -6, you get that the answer is 59

Mar 31, 2018

(fg)(6)=59

Explanation:

(fg)(6) = f(6)g(6)

f(6)=(6)24
f(6)=364
f(6)=32

g(6)=4(6)3
g(6)=243
g(6)=27

f(6)g(6)
32(27)
32+27
59