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5x^2-15x+225/4=0
We multiply all the terms by the denominator
5x^2*4-15x*4+225=0
Wy multiply elements
20x^2-60x+225=0
a = 20; b = -60; c = +225;
Δ = b2-4ac
Δ = -602-4·20·225
Δ = -14400
Delta is less than zero, so there is no solution for the equation
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