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What is the value of $b+c$ if $x^2+bx+c>0$ only when $x\in (-\infty, -2)\cup(3,\infty)$?

 Jul 30, 2020
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The quadratic is (x - 3)(x - 2) = x^2 - 5x + 6, so b + c = (-5) + 6 = 1.

 Aug 3, 2020

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