Question

How do I solve this

Answer 1

Explanation:

well, I'd just multiply each option out using FOIL

First, Outside, Inside, Last

A) (x + 2√3i)(x - 2√3i)

First x(x) = x²

Outside x(- 2√3i) = - 2x√3i

Inside x(2√3i) = 2x√3i

last (- 2√3i)(2√3i) = -(2²)(√3²)(i²) = -4(3)(-1) = 12

add them all up x² + 12 looks like it works for me

B) = x² + 36

C) = x² + 4√3 + 12

D) = x² - 12