Multiply (6 – 5i)2
Apply distributive property
6(2)+(-5i)(2)
12-10i
the answer is
12-10i
Part 2
we have
(6-5i)^2
so
(6)^2-2(6)(5i)+(5i)^2
36-60i+25i^2
Remember that
i^2=-1
substitute
36-60i+25(-1)
36-60i-25
combine like terms
11-60i
the answer is option A