Question

12.If f(x) = x + 1 and g(x) = 2x + 8 be real functions, find (f+g)(-2) (f-g)(-4)

Answer 1

Answer:

(f + g)(-2) = 3

(f - g)(-4) = -3

Step-by-step explanation:

(f + g) = x + 1 + 2x + 8 = 3x + 9

(f + g)(-2) = -6 + 9 = 3

(f - g) = x + 1 - 2x - 8 = -x - 7

(f - g)(-4) = 4 - 7 = -3