Help quickly please! Which of the following expressions is equal to -3x^2-27?

Question

Help quickly please!

Which of the following expressions is equal to
`-3x^2-27`?

Answer 1

Answer: C

Explanation:

(-3x + 9i) (x + 3i)

-3x^2 - 9ix + 9ix - 27

-3x^2 - 27

So, the answer is C