Question

# Rationalize the denominator of the following: 1(√7−√6)

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Solution

## Multiply the numerator and denominator by(√7+√6).We get,1√7−√6=1(√7+√6)(√7−√6)(√7+√6)=√7+√6(√7)2−(√6)2=√7+√61=√7+√6 [using the identity (a+b)(a−b)=a2−b2]

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