Question

For f(x) =2x+1 and g(x)=x^2-7 find (f o g) (x)

Answer 1

(f o g) (x) = 2x² - 13

Explanation:

f(x) =2x+1 and g(x)=x²-7

(f o g) (x) = f [g(x)] = 2[g(x)] + 1 = 2(x²-7) + 1 = 2x² - 14 + 1 = 2x² - 13