SOLUTION: write the expression as a complex number in standard form (5-7i)(-4-3i)

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Question 692307: write the expression as a complex number in standard form
(5-7i)(-4-3i)
Answer by mouk(232) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: ARITHMETIC on Complex Numbers

Solution:Multiplication of two complex numbers a + bi
and c+di is done according to formula:


(a + bi) * (c+di) = (ac-bd) + (ad+bc)i.


In our case,