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25*x^2 + 4 = 20*x 25*x^2 - 20*x + 4 = 0 25*x^2 - 10*x - 10*x + 4 = 0 5*x(5*x - 2) - 2* (5*x - 2) = 0 (5*x - 2)*(5*x - 2) = 0 or (5*x - 2)^2 = 0 5*x = 2 x = 2/5 or 0.4

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Q: 25x2 plus 4 equals 20x
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