Math Question: Simplify the expression 2x^2 + 5x - 3 using factoring and the distributive property.
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Math Question: In triangle ABC, angle A is bisected by the line segment DE. If angle A measures 80 degrees, find the measures of angles B, C, D, and E.
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What is the sum of the interior angles of an isosceles triangle with one angle measuring 50 degrees?