simplify 3/(2+√5)
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2 Answers

3 / [2+sqrt(5)]

multipli bi [2-sqrt(5)] / [2-sqrt(5)] and yu get

3*[2-sqrt(5)] / (4 +5)

=(3/9)*[2-sqrt(5)]

=6-3*sqrt(5)

sqrt(5)=2.23606797749979 & -3*(2.2....)=-6.708203932499369

anser=-0.7082039324993694
by

There is one mistake in the muneepenee's answer: 

3*[2-sqrt(5)] / (4 +5)

3*[2-sqrt(5)] / (4 - 5)

The correct answer is: 3sqr(5)-6

by Level 8 User (35.3k points)

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