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2x2 - 5x = 3
∴ 2x2 - 5x - 3 = 0
∴ 2x2 + x - 6x - 3 = 0
∴ x(2x + 1) - 3(2x + 1) = 0
∴ (x - 3)(2x + 1) = 0
∴ x ∈ {-0.5, 3 }
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