1.

Rationalise √5-√2 /√5+√2​

Answer»

ANSWER:

(√5-√2)(√5+√2) = 3

Step-by-step explanation:

Simplification of

(√5-√2)(√5+√2)

= (√5)²-(√2)²

by \: algebraic \: identity \\  {a}^{2}  -  {b}^{2}  = (a + b)(a - b)

= 5 - 2

= 3

Therefore,

(√5-√2) (√5+√2) = 3

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