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OpenStudy (anonymous):
Rationalize the denominator of: sqrt-9/(4-7i)-(6-6i) So far, I've simplified the denominator to -2-i. Is that correct so far?
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OpenStudy (ash2326):
it's correct , now multiply the numerator and denominator by -2+i, and change sqrt(-9) to -3i, and then simplify.
OpenStudy (anonymous):
6i-3i^2/4-i^2 Then plug in -1 for i^2?
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