Question

simplyfy (3+root3) (3-root 3)

Answer 1

(3+√3)(3-√3)
(3²)-(√3²)
9-3
6 answer is that

Answer 2

here is your solution

$= (3 + \sqrt{3}) (3 - \sqrt{3} ) \\ = 9 + 3 \sqrt{3} - 3 \sqrt{3} - 3 \\ = 6$


I hope it helps you