SOLUTION: Simplify each expression. Rationalize all denominators Assume that all variables are positive.
(2 - sqrt5)(2 + sqrt5)
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Question 867961: Simplify each expression. Rationalize all denominators Assume that all variables are positive.
(2 - sqrt5)(2 + sqrt5)
Answer by ramkikk66(644) (Show Source): You can put this solution on YOUR website!
Expression is
This is of the form (a + b)*(a - b). Using the identity
The answer is
= =
Hope you got it!
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