Question

Root 7-root5/root 7+root 5

Answer 1

Answer:

√7-√5/√7+√5

(√7-√5)(√7-√5)/(√7+√5)(√7-√5)

(√7-√5)²/(√7-√5)(√7+√5)

USING (a-b )²=a²+b²-2ab

(a-b)(a+b)=a²-b²

(√7)²+(√5)²-2(√7)(√5) / (√7)²-(√5)²

7+5-2√35/7-5

12-2√35/2

2(6-√35)/2

6-√35