1. x^2+12x+39>12 2. X^2-24<5x
x^2-5x-24 < 0 (x-8)(x+3) = 0 the graph is below the x-axis between the roots, on the interval (-3,8) You can do all the math that was shown in the other problem below, but why not use what you know about the behavior of parabolas?
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