How would the fraction, 7/1- square root of 5, be rewritten if its denominator is rationalized using difference of squares?

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asked Mar 21, 2019 153k views

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Critichu · Answer 1 · 2019-03-26T23:53:37+0000

You say you meant " 7/1 - square root of 5 " OK. I will interpret that to be:

7
---------------
1 - sqrt(5)

If you wish to rationalize the denominator, mult. both the numerator and the denom. of the above fraction by 1 + sqrt(5). You will get:

7( 1+sqrt(5) ) 7( 1+sqrt(5) )
--------------------- = ---------------------
1^2 - 5 -4

How would the fraction, 7/1- square root of 5, be rewritten if its denominator is rationalized using difference of squares?

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