Answers

2016-02-26T19:32:34+05:30
7-√7 can be completely factorized to √7(√7-1).
Least rationalizing factor of (√7-1) = √7(√7+1)
= (√7)²(√7-1)(√7+1)
= 7((
√7)²-(1)²)
= 7(7-1)
= 7*6
= 42

∴ Least rationalizing factor = √7(√7+1)
0