Q5 of 32 Page 20

Rationalize the denominator of .

For rationalization considering (√7 + √6) = x, and √13 = y

So,





Since, from the identity we know that


(a + b)(a-b) = a2-b2





The denominator is still irrational. So we have to rationalize it further.


Now rationalizing factor = √42








Now the denominator is rationalized.


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