SOLUTION: Simplify the following product of complex numbers. (4 – 8i) • (-5 + 2i)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Simplify the following product of complex numbers. (4 – 8i) • (-5 + 2i)       Log On


   

Question 617409: Simplify the following product of complex numbers.
(4 – 8i) • (-5 + 2i)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(4 – 8i) • (-5 + 2i)
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Use FOIL:
F: 4*-5 = -20
O:4*2i = 8i
I: -8i*-5 = 40i
L: -8i *2i = +16
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Combine:
-4 + 48i
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cheers,
Stan H.