The rationalisation factor of √3 is
−√3
1√3
2√3
−2√3
Rationalisation factor of √3 is 1√3
(∵√a×1√a=1)
The rationalisation factor of 2+√3 is
Rationalising factor of 1√3+√5 is
Write the rationalisation factor of 7−3√5.