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2*x^2-((50/10)*x)-50 = 0
2*x^2-5*x-50 = 0
2*x^2-5*x-50 = 0
DELTA = (-5)^2-(-50*2*4)
DELTA = 425
DELTA > 0
x = (425^(1/2)+5)/(2*2) or x = (5-425^(1/2))/(2*2)
x = (5*17^(1/2)+5)/4 or x = (5-5*17^(1/2))/4
x in { (5-5*17^(1/2))/4, (5*17^(1/2)+5)/4 }
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