SOLUTION: (3Square root of 2 -9)(3 square root of 2+9) HOW DO I SOLVE THAT

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Question 853686: (3Square root of 2 -9)(3 square root of 2+9) HOW DO I SOLVE THAT
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
((3Sqrt2) -9)((3Sqrt 2)+9)=
use FOIL
3Sqrt2*3Sqrt2=9*2=18
-9*3Sqrt+
9*3Sqrt2
-81
=
-63