Simplify: ( sqrt (2) + sqrt (3) ) ( sqrt (2) - sqrt (3) )?

Question

a) 2 - 2 sqrt (6) - 3
b) -1
c) 2 + 2 sqrt (6) - 3
d) 5

i just need to know if my answer or right or wrong. i think the answer is b thanks

Answer 1

(a+b)(a-b) = a^2-b^2
so
2 -3
which is
-1

Answer 2

thanks damon