SOLUTION: (-3-5i)(1+6i)

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Question 314583: (-3-5i)(1+6i)
Found 2 solutions by solver91311, CharlesG2:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Hint: Just use FOIL like multiplying any pair of binomials, but don't forget that . Hence the "Last" product will be (-5)(6)(-1) = 30.

John

Answer by CharlesG2(834) About Me  (Show Source):
You can put this solution on YOUR website!
(-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