Question

simplify: i) (-3 + root5)(-3 – root5)​

Answer 1

Answer:

here is the answer mate

$here \: is \: a \: formula \: used \\ (a + b)(a - b) = a^{2} - b ^{2}$

-3×-3 +root 5× root 5

9+root 5 hole square

9+5

=11