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evergirl
A fraction has a denominator of 3 + 4i. What is multiplied with the fraction to rationalize the fraction?
To get a real number out of an imaginary number, you multiply by its conjugate. The conjugate of a+bi is a-bi, so the conjugate of 3+4i is 3-4i. So, you multiply by \[\frac{3-4i}{3-4i}\] to rationalize it.