Question

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

Answer 1

the forth one is right

Answer 2

Option C.

Explanation:

Since f(x) = √(x² + 12x + 36)

g(x) = x³ - 12

We have to solve the expression f(x).g(x)

f(x).g(x) = {√(x² + 12x + 36)}.{x³ - 12} = [√(x + 6)²].(x³-12) = (x + 6)(x³-12)

=
`x^(4)+6x^(3)-12x-72`

which matches with option C.

Therefore option C is the correct option.