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OpenStudy (anonymous):
A fraction has a denominator of 2 + 7. What is multiplied with the fraction to rationalize the fraction?
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OpenStudy (anonymous):
is there supposed to be an i somewhere in there?
OpenStudy (anonymous):
2+7i
OpenStudy (anonymous):
you multiply by the complex conjugate, 2-7i
OpenStudy (anonymous):
\[(a-bi)(a+bi)=a^2+b^2\]
OpenStudy (anonymous):
so your denominator wil be rationalized
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