Question

if c(x) = 4x – 2 and d(x) = x^2 + 5x, what is (c o d)(x)?

Answer 1

Just replace 'x' in c(x) by d(x)
(cod) (x) = 4(x^2+5x) - 2 = 4x^2 +20x - 2
Thats it!