Question

Rational the denominaror 2/√7-√5

Answer 1

Answer:

= [5 * (√7 - √2)] / [(√7 + √2) * (√7 - √2)]

= [5 * (√7 - √2)] / [(√7)² - (√2)²]

= [5 * (√7 - √2)] / (7 - 2)

= [5 * (√7 - √2)] / (5)

= [5 * (√7 - √2)] / 5

= (√7 - √2) * (5 / 5)

= (√7 - √2) * (1)

= (√7 - √2)

= √7 - √2

The final answer is: √7 - √2

Step-by-step explanation:

please follow me

Answer 2

√7+√5

Step-by-step explanation:

2/√7-√5

= 2/√7-√5 × √7+√5/√7+√5

= 2(√7+√5)/(√7-√5)(√7+√5)

{(√a+√b)(√a-√b)}=a-b

= √14+√10/7-5

= √14+√10/2

=√14/2+√10/2

=√7+√5