Question

(2+√3) (3-√5) is it rational or irrational number​

Answer 1

Answer:

(2+√3)(3-√5)

identity (a+b)(a-b) =a*-b*

(2+√3)(3-√5)

2(3-√5)+√3(3-√5)

6-2√5+9-√15

15-2√5-√15

it is a irrational number