SOLUTION: Can you show me a step by step process in solving this:
(1- sqrt of 5)(1+sqrt of 5)
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Question 44962: Can you show me a step by step process in solving this:
(1- sqrt of 5)(1+sqrt of 5)
Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!
(1- sqrt of 5)(1 + sqrt of 5)
(1)(1)+ (1)(sqrt5)-(sqret5)(1)-(sqrt5)(sqrt5) [Use the FOIL method to multiply]
1 - (sqrt5) + (sqrt5) - (sqrt5)^2 [Multiply and simplify]
1 - (sqrt5)^2 [The middle terms cancel out; (sqrt5)^2 = 5]
1 - 5 [Simplify]
-4 [Answer]
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