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Problem of the Day #120: Fun With Quartics July 17, 2011

Posted by Albert in : potd , trackback

The quartic $$f(x) = x^4 + 17 x^3 + A x^2 + B x + 3600$$ has roots $r_1, r_2, r_3, r_4$. If $r_1 r_2 = r_3 r_4$, find $|B|$.

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