Question

simplify the following: (3+root3)(3-root3)​

Answer 1

$\huge\underline\frak\red{Solution}$

(3+√3)(3-√3)

= (3)²-(√3)²

= 9 - 3

= 6

Note:-

a²-b² = (a+b)(a-b)

(a+b)² = a²+b²+2ab

(a-b)² = a²+b²-2ab

Answer 2

Answer:

3to the power2 -root 3 ka square

=9-3

=6