Question

Find a & b so that :-
√7-1 /√7+1 - √7+1 /√7-1 = a+b√ 7

Answer 1

$\frac{\sqrt7 - 1}{\sqrt7 + 1} - \frac{\sqrt7 + 1}{\sqrt7 - 1}$

$\frac{(\sqrt7 - 1)^2-(\sqrt7 + 1)^2}{7 - 1}$

$\frac{(7+1-2\sqrt7-7-1-2\sqrt7)}{6}$

$\frac{(-2\sqrt7)}{3}$

So, on comparing LHS with RHS 
we get
a = 0 and b = -2/3

Answer 2

Answer:

Step-by-step explanation:

7√3/√10+√3 - 2√5/√6+√5 - 3√2/

√15+3√2