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OpenStudy (anonymous):
can someone tell me what I did wrong, 10(4 - 3i) and my answer is 40+30i this is Imaginary Numbers
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OpenStudy (anonymous):
You started with a minus, how did it turn into a plus?
OpenStudy (cwrw238):
10 * -3i = -30i
OpenStudy (anonymous):
it should stay plus still don't change the singe
OpenStudy (anonymous):
imaginary number i^2=-1 but u did not have that so do not change the signe
OpenStudy (anonymous):
The answer should be 40-30i
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OpenStudy (anonymous):
@nbouscal yea I shouldnt have changed the sign
OpenStudy (anonymous):
I corrected myself and its right
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