Question

rationalisation of 1/√7–√6 –1/√6–√5–1/√5–√4–1/√4–√3​

Answer 1

$\frac{ \sqrt{7} }{ \sqrt{7} } - \frac{ \sqrt{6} }{ \sqrt{6} } - \frac{ \sqrt{5} }{ \sqrt{5} } = - 3$