Question

simplyfy this equation :
(√5-√2)(√5+√2)​

Answer 1

Answer:

answer is 3

Step-by-step explanation:

(√5 + √2)(√5 - √2)

use identity (a² - b²) = (a+b)(a-b)

= (√5)² - (√2)²

= 5 - 2

= 3

Answer 2

Answer:

3

Step-by-step explanation:

$( \sqrt{5} - \sqrt{2} )( \sqrt{5} + \sqrt{2} ) \\ = {( \sqrt{5}) }^{2} - {( \sqrt{2} )}^{2} \\ = 5 - 2 \\ = 3$

Formula used:

$(x + y)(x - y) = {x}^{2} - {y}^{2}$

where,

$x = \sqrt{5} \: \: \: and \: y = \sqrt{2}$