What is the dot product between vector A = (3, -5) and vector B = (2, 4)?
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Question: Given a triangle with angles A, B, and C, if the angle bisector of angle A intersects the opposite side at point D, and AD = 6 cm, what is the length of the side BC?
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What is the quadratic equation of a parabola with vertex (-2, 5) and a directrix y = -8?