Raymond B. answered 09/25/21
Tutor
5
(2)
Math, microeconomics or criminal justice
16x^2 +72x + 81 + 4
= 16x^2 + 72x + 85
f(x) = x^2 + 4
g(x) = 4x + 9
f(g(x)) = (g(x))^2 + 4 = (4x+9)^2 + 4 = 16x^2 + 72x + 81 + 4 = 16x^2 + 72x + 85
replace the x in x^2 + 4 with g(x)
K M.
How did you distribute this?09/25/21