Math question: Simplify the rational expression (3x^2 + 4x - 5) / (x^2 - 3x + 2), when x approaches 2.
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Question: What is the value of cos(2θ) when sinθ = 0.8?
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What is the theorem stating that if two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent?