Saturday
August 1, 2015

Homework Help: math

Posted by peter on Tuesday, October 26, 2010 at 7:19am.

5/11+root5

How would I rationalize this

I think it would be -

Multiply both sides by 11-root5
then use the foil method on the denominator to give you 55-5root5/121+5root11-5root11-5
the 2 roots would cancel out giving you 55-5root5/12-5

so would the answer be 55-5root5/7

thanks in advance

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