Question

simplify each of the following expressions (✓5-✓2) (✓5+✓2)​

Answer 1

Answer:

(√5) ^2-(√2) ^2 [since (a+b) (a-b) =a^2-b^2]

5-2

3

Answer 2

Step-by-step explanation:

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