SOLUTION: RATIONALIZE THE NUMERATOR. {{{(sqrt(5)-2)/(sqrt(5)+2)}}} thanks

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Question 434455: RATIONALIZE THE NUMERATOR.
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thanks
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
(sqrt(5)-2)/(sqrt(5)+2) You must rationalize the DENOMINATOR always! Why?
(sqrt(5)-2)/(sqrt(5)+2) * (sqrt(5)-2)/(sqrt(5)-2)
=9-4sqrt(5)/1
=9-4sqrt(5)
.
Ed