SOLUTION: Simplify. (√7 + 2) (√7 - 2)

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Question 304461: Simplify.
(√7 + 2) (√7 - 2)
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(sqrt7+2)(sqrt7-2)
this is the form of identity
(a+b)(a-b)= a^2-b^2
(sqrt7)^2-(2)^2
7-4
=3
Ananth