Question 304529: I need som help on solving this question please.
2(-5+12i)/1+i
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 2(-5+12i)/(1+i)
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Notice that (1+i)(1-i) = 1-i+i+1 = 2
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Multiply numerator and denominator by 1-i to get:
[2(-5+12i)(1+i)/(2]
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= (5-12)+(12i-5i)
= -7+7i
= -7(1+i)
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Cheers,
Stan H.
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