(a + b) ² = a² + 2ab + b²

Also x = 1 / y or y = 1/x

Let a = x

b = y

(x + y) ² = x² + 2xy + y²

But we know y = 1/x

Here the denominators form the expansion as

(a + b) × (a – b) = (a² – b²)

Here a = √3

b = √2

a² = (√3)²

= 3

b² = (√2)²

= 2

= 10² – 2

= 100-2

= 98