Question

Simplify)(3+√5) (3-√5) using identity​

Answer 1

Answer:

Kindly refer to the attached image for explanation.......

Answer 2

formula :

(a+b)(a-b) = a^2 -b^2

(3+√5)(3-√5)= (3)^2 - (√5)^2

(3+√5)(3-√5) = 9 - 5

(3+√5)(3-√5) = 4