# How do you rationalize the denominator and simplify (sqrt(11)-sqrt(2))/(sqrt(11)+sqrt(2))?

##(13 -2sqrt(22))/9##

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How do you rationalize the denominator and simplify (sqrt(11)-sqrt(2))/(sqrt(11)+sqrt(2))?
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Multiply the numerator and the denominator by the reciprocal of the denominator

##sqrt(11) – sqrt(2)##

This will give you

##(sqrt11 – sqrt2)/(sqrt11 + sqrt2) = (sqrt11 – sqrt2)/(sqrt11 + sqrt2) xx (sqrt11 – sqrt2)/(sqrt11 – sqrt2)##

Then multiply the numerator to each other, same with the denominator to remove the radical sign. Because multiplying the same radicals the result was still the radicand itself
e.

##sqrt 11 xx sqrt 11 = sqrt(11^2) = 121##

##(sqrt11 – sqrt2)/(sqrt11 + sqrt2) xx (sqrt11 – sqrt2)/(sqrt11 – sqrt2) = (sqrt11 – sqrt2)^2/(11 – 2)##

This will get you

##(11 – 2 sqrt(22) + 2)/9 = (13 -2sqrt(22))/9##

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