Question

√11-√7/√11+√7=a-b√77​

Answer 1

(√11-√7)/(√11+√7)

(√11-√7)²/(√11+√7)(√11-√7)

(11+7-2√77)/(11-7)

18-2√77/4

9-√77/2

a=9,b=1/2

hope its help u.....

Answer 2

LHS=√11-√7/√11+√7

(√11-√7)/(√11-√7)/ (√11+√7)(√11+√7)

(√11+√7)^2/

(√11)^2-(√7)^2

(11+7-2√77)/4

(18-2√77)/4

LHS=RHS

(18-2√77)/4=a-b√77

a=9/2

b=1/2

here is your answer maTe....