Question

Express your answer as a polynomial in standard form f(x)=x^2-3x+12

g(x)=5x+8
find (g•f)(x)

Answer 1

(gof)(x)=g(f(x))=g(x^2- 3x +12 )

gof = 5 (x^2 -3x+12) +8

=5x^2-15x +68