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July 23, 2014

July 23, 2014

Posted by **Sophie** on Wednesday, June 24, 2009 at 5:25pm.

I get 3-8i and 5-8i... confused, which one is it?

- math -
**Reiny**, Wednesday, June 24, 2009 at 5:58pmI get 3-8i

how did you get**5**- 8i ??

-1 + 4 = 3 not 5

- math -
**MathMate**, Wednesday, June 24, 2009 at 6:00pm3-8i is correct.

(-1-2i)+(4-6i)

= -1-2i + 4-6i

= -1+4 -2i -6i

= 3 - 8i

- math -
**Sophie**, Thursday, June 25, 2009 at 1:06pmI get confused with negatives sometimes! thanks though!!

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