Posted by Sophie on Wednesday, June 24, 2009 at 5:25pm.
Simplify: (12i)+(46i)
I get 38i and 58i... confused, which one is it?

math  Reiny, Wednesday, June 24, 2009 at 5:58pm
I get 38i
how did you get 5  8i ??
1 + 4 = 3 not 5

math  MathMate, Wednesday, June 24, 2009 at 6:00pm
38i is correct.
(12i)+(46i)
= 12i + 46i
= 1+4 2i 6i
= 3  8i

math  Sophie, Thursday, June 25, 2009 at 1:06pm
I get confused with negatives sometimes! thanks though!!
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