Question 314583
(-3-5i)(1+6i)
use FOIL, i^2 = -1

(-3 - 5i) (1 + 6i)
these are two complex numbers in a+bi form multiplied together
(-3)(1) + (-3)(6i) + (-5i)(1) + (-5i)(6i)
-3 - 18i - 5i - 30i^2
-3 - 23i + 30
27 - 23i