Question

simplify by rationalisimg the denominator 4/√5-√3​

Answer 1

4 / (√5 - √3)

= 4 / ( √5 - √3 ) * (√5 + √3) / (√5 + √3)

= 4 (√5 + √3 ) / 5-3

= 4 ( √5 + √3 ) /2

= 2√5 + 2√3