Question

Let f(x) = 49 - x2 , g(x) = 7 Find (f-g)(X)
A. -x^2 - x + 56
B. 7 + x
C. -x^2 + x + 42
D. -x^3 - 7x^2 - 49x + 343

Answer 1

(f - g)(x) = f(x) - g(x) = 49 - x^2 - 7 = -x^2 + 42

Answer 2

Its g(x) = 7 - x forgot to put the - x

Answer 3

f(x) - g(x) = 49 - x^2 - (7 - x) = 49 - x^2 - 7 + x = -x^2 + x + 42

Answer 4

(f - g)(x) = f(x) - g(x)
Likewise, (f + g)(x) = f(x) + g(x)

Answer 5

Yes, C is the answer

Answer 6

sweet thanks alot preciate it