Question

(root5-root2) ( root5+root2)​

Answer 1

Answer:

(a-b)(a+b)

(√5-√2)(√5+√2)

5-2

3

Answer 2

Answer:

⭐ Answer ⭐

$( \sqrt{5} - \sqrt{2} )( \sqrt{5} + \sqrt{2} ) \\ \\ use \: identity \\ \\ (a - b)(a + b) = {a}^{2} - {b}^{2} \\ \\ we \: get \\ \\ ( \sqrt{5} - \sqrt{2})( \sqrt{5} + \sqrt{2} ) \\ = ({ \sqrt{5} }^{2} ) - ( { \sqrt{2} }^{2} ) \\ \\ = 5 - 2 = 3$