x – y = …………. A) x√y – 1 B) (√x – √y)(√x + √

1.	x – y = …………. A) x√y – 1 B) (√x – √y)(√x + √y) C) (x – √y)(x – √y) D) (√x – y)2
Answer» B) (√x – √y)(√x + √y) Correct option is (B) (√x – √y)(√x + √y) x – y \(=(\sqrt x)^2-(\sqrt y)^2\) = \((\sqrt x-\sqrt y)(\sqrt x+\sqrt y)\)

x – y = …………. A) x√y – 1 B) (√x – √y)(√x + √y) C) (x – √y)(x – √y) D) (√x – y)2

Answer»

B) (√x – √y)(√x + √y)

Correct option is (B) (√x – √y)(√x + √y)

x – y \(=(\sqrt x)^2-(\sqrt y)^2\)

= \((\sqrt x-\sqrt y)(\sqrt x+\sqrt y)\)