Question

Which expression is equal to f(x) · g(x)?

Answer 1

Answer:

C

Step-by-step explanation:

f(x) × g(x)

= $\sqrt{x^2+12x+36}$ × (x³ - 12)

= $\sqrt{(x+6)^2}$ × (x³ - 12)

= (x + 6)(x³ - 12) ← distribute the parenthesis

= $x^{4}$ - 12x + 6x³ - 72

= $x^{4}$ + 6x³ - 12x - 72