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2007 iTest Problems/Problem 18

Revision as of 16:16, 1 January 2017 by Pretzel (talk | contribs) (→Problem)

Problem

Suppose that $x^3+px^2+qx+r$ is a cubic with a double root at $a$ and another root at b, where $a$ and $b$ are real numbers. If $p=-6$ and $q=9$, what is $r$?

Solution

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