SOLUTION: Please simplify and multiply the square root. Thanks! (√18+√8)(√18-√8)

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Question 80452: Please simplify and multiply the square root. Thanks!

(√18+√8)(√18-√8)
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
[use the FOIL method to multiply]
.
%2818-sqrt%2818%29sqrt%288%29%2Bsqrt%2818%29sqrt%288%29-8%29%29 [a radical raised to the second power will equal the value of the radicand]
.
18-8 [subtract the middle term and it drops out]
10
.