Question

How do you simplify #(-3 - 2i)(-3 + 3i)#?

Answer 1

So, ( -3 - 2i )( -3 + 3i ) = 9 - 9i +6i - 6i^2 = 9 - 3i - 6·(-1) = 9 + 6 - 3i = 15 - 3i;
We have / 15 +(- 3)i / = 15.29;$\sqrt{ 15^{2} + (-3)^{2} } = \sqrt{225 + 9} = \sqrt{234} =$