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OpenStudy (anonymous):
How can i simplify (-1 - 4i) - (2 - 7i) ?
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OpenStudy (anonymous):
what are the anwser chioces???
OpenStudy (ivettef365):
that is just adding, so you have -1-4i -2+7i
OpenStudy (ivettef365):
combine like terms
OpenStudy (anonymous):
A. 1 - 11i B. 1 + 11i C. -3 + 3i D. -30 - i @XxBATMANxX1996
OpenStudy (anonymous):
Mine if I cut in ?
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OpenStudy (anonymous):
b
OpenStudy (anonymous):
no wrong .
OpenStudy (anonymous):
it's C
OpenStudy (anonymous):
http://www.wolframalpha.com/input/?i=(-1%20-%204i)%20-%20(2%20-%207i)&t=crmtb01&f=rc
OpenStudy (ivettef365):
-1 -2 = -3
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OpenStudy (anonymous):
C
OpenStudy (ivettef365):
-4i + 7i = 3i
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