Find the measure of angle A in triangle ABC if the angle bisector of angle A intersects side BC at point D. Given that BD = 3x + 2 and CD = 5x + 4, and x = 7.
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Math question: "Factorize the expression x^2 + 6x + 9."
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Question: What is the tangent of the angle formed by an isosceles triangle with base angles of 45° each?