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Mathematics 9 Online
OpenStudy (anonymous):

Evaluate 3-i / 6+6i

OpenStudy (anonymous):

first rationalize the denominator i.e., \[\frac{3-1}{6+6i}\times\frac{6-6i}{6-6i}\]

OpenStudy (anonymous):

this step will remove the imaginary part from the denominator

OpenStudy (anonymous):

yes which brings me to \[12-25i \div 6^2 - (6i)^2 \] now i need help to see what i am mistaking?

OpenStudy (anonymous):

correct

OpenStudy (anonymous):

the bottum equals 72 ?

OpenStudy (anonymous):

numerator: \((3-i)(6-6i)=18-6i-18i-6\)

OpenStudy (anonymous):

yes bottom is 72 but your numerator is wrong

OpenStudy (anonymous):

oh... wait ... i see what i did .... so the numerator is .... 12-24i

OpenStudy (anonymous):

right

OpenStudy (anonymous):

lol life saver !! THANK YOU :}

OpenStudy (anonymous):

you are welcome

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