Question

Cum rezolv: (√5-√3) (√5+√3)?:(

Answer 1

Te folosesti de formula (a-b)(a+b)=$a^{2} - b^{2}$

In cazul tau: 5-3=2

Answer 2

Aplic formula: a²-b²=(a+b)(a-b)
(√5-√3) (√5+√3)=5-3=2