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OpenStudy (anonymous):
PLEASE HELP ME! ILL MEDAL AND FAN Which of the following is the conjugate of a complex number with 2 as the real part and 7 as the imaginary part? A. 2 + 7i B. -2 - 7i C. -2 + 7i D. 2 - 7i
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OpenStudy (welshfella):
the conjugate of a +bi is a - bi
OpenStudy (welshfella):
so that of 2 + 7i will be ?
OpenStudy (anonymous):
\[z=a+ib\] Conjugate is \[\overline{z}=a-ib\] Then what is the answer?
OpenStudy (welshfella):
- only the sign changes
OpenStudy (anonymous):
2-7i?
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OpenStudy (anonymous):
@welshfella
OpenStudy (welshfella):
right
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