Question

Rationalize The Denominator And Simplify: 1/2√5 - √3

Answer 1

=> 1/2√5-√3 × 2√5+√3/2√5+√3

=> 2√5+√3/(2√5)²-(√3)²
=> 2√5 + √3/ 20 - 3
=> 2√5+√3/17


hope you will understand it....

Answer 2

on rationalising

1/2√5-√3x2√5+√3/2√5+√3

=2√5+√3/(2√5)^2-(√3)^2

=2√5+√3/20-3

2√5+√3/17