Simplify the radical expression.

Question

(3+√6)(3 - √6)
A. -27 <---?
B. 3
C. 9+6√6
D. 15+6√6

Answer 1

no
(3+√6)(3 - √6)
= 9 - 6
= 3

(√6)(√6) = 6 , using property √x*√x = x

Answer 2

Ohhh okay, I understand it now. Thank you =)