Question

(2+root 3) (2- root3)​

Answer 1

Answer:

(2+√3)(2-√3)

it is in the form of (a+b)(a-b)

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

so we can write as 2^2-√3^2=4-3=1.

(here √3^2=3).

so the answer is 1.

hope that it is useful.