SOLUTION: (4+5i)(2-3i)

Question 283669: (4+5i)(2-3i)
Found 2 solutions by oberobic, PRMath:
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!

Answer by PRMath(133) (Show Source): You can put this solution on YOUR website!
(4+5i)(2-3i)

Use FOIL (first outside inside last)

First:
Outside:
Inside:
Last:

Let's put it all together:
Combine like terms:

We're not done yet. See the ?
Well, =

Therefore, for you really have: which is: 15

THEREFORE... you really have 8 - 2i + 15, which is.....
23 - 2i

See how that worked out? I hope this helps you. :-)
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