If f(x) = 3^2and g(x)=x+2, find (f •g)(x).
ОА. 3x^2 +6х
ОВ. 3х^3 +6х
Ос. X^3 + 2
OD. 3x +6x^2

Step-by-step explanation:

(f •g)(x)= 3x² * (x + 2)

            = 3x²*x + 3x² *2

            =3x³ + 6x²

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form