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OpenStudy (joshoyen):
Simplify. 1+9i / -7-6i
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OpenStudy (wolframwizard):
Multiply the numerator and the denominator by the conjugate of the denominator. The conjugate of a+b is a-b just in case you didn't know.
OpenStudy (joshoyen):
So the conjugate is -7+6i?
OpenStudy (wolframwizard):
Yes
OpenStudy (joshoyen):
I got -61-66i/85
OpenStudy (wolframwizard):
The -61 and 85 are correct but the -66 should be -57. Check your work to see if you made a calculation error somewhere
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OpenStudy (joshoyen):
okay thank you!
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