Question

Q.12 If f(x) = x2 + 4, g(x) = 2x – 1 find f(g(x)).​

Answer 1

Answer:

$f(x) = {x}^{2} + 4$

$g(x) = 2x - 1$

$f(g(x)) = {(2x - 1)}^{2} + 4 = 4{x}^{2} + 1 - 4x + 4$

$f(g(x)) = 4 {x}^{2} - 4x + 5$