Question

Multiply and simplify:

Answer 1

\[(9+2\sqrt{3})(9-2\sqrt{3})\]

Answer 2

81-12

Answer 3

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

Answer 4

@ksrakhilesh do you mean

Answer 5

\[81-4\sqrt{3}\]

Answer 6

9^2-(2root3)^2