SOLUTION: I don't know how to do this. Could you please explain? I have to multiply complex numbers. a. (2-5i)(3+2i) b. (4-i) (6-5i) Thank you so much!

Algebra ->  Rational-functions -> SOLUTION: I don't know how to do this. Could you please explain? I have to multiply complex numbers. a. (2-5i)(3+2i) b. (4-i) (6-5i) Thank you so much!      Log On


   

Question 526284: I don't know how to do this. Could you please explain? I have to multiply complex numbers.
a. (2-5i)(3+2i)
b. (4-i) (6-5i)

Thank you so much!
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
I don't know how to do this. Could you please explain? I have to multiply complex numbers.
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You multiply them.
a. (2-5i)(3+2i)
= 2(3+2i) - 5i*(3+2i)
= 6+4i - 15i - 10i^2
= 6 - 11i - 10*(-1)
= 6 - 11i + 10
= 16 - 11i
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b. (4-i) (6-5i)
You do this one.