Math question: "Factorize the expression 3x^2 + 10x + 8 using the Factoring formulas."
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Find the median of a set of numbers: 5, 7, 9, 11, 15, and 20.
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Math question: Graph the quadratic function y = 2x^2 + 3x - 1 on the coordinate plane. Determine the vertex coordinates and whether the parabola opens upward or downward.