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Mathematics 20 Online
OpenStudy (anonymous):

Rationalize the denominator of 3 / 5-6i 15+18i / 61 -15+18i / 61 3i / 6+5i 15+18i / -11

OpenStudy (anonymous):

\[5^2+6^2=61\] so it is definitely one of the first two

OpenStudy (anonymous):

now you need to multiply \(3(5+6i)\) for your numerator

OpenStudy (anonymous):

i get A \[\frac{15+18i}{61}\]

OpenStudy (anonymous):

so it would be 15 +18?

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

well actually \(15+18i\)

OpenStudy (anonymous):

oh , but what would the bottom b?

OpenStudy (anonymous):

nm

OpenStudy (anonymous):

k

OpenStudy (anonymous):

thank u

OpenStudy (anonymous):

yw

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