Question

what is rationalizing factor ??

Answer 1

A magic number or expression that turns an irrational number or expression into a rational one.

Irrational Number ==> \(\sqrt{2}\) ==> Rationalizing Factor ==> \(\sqrt{2}\)
Irrational Number ==> \(1+\sqrt{2}\) ==> Rationalizing Factor ==> \(1-\sqrt{2}\)
Irrational Expression ==> \(x+\sqrt{2}\) ==> Rationalizing Factor ==> \(x-\sqrt{2}\)