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5.97 = (100/3)*x^2+3900*x+100 // - (100/3)*x^2+3900*x+100
5.97-((100/3)*x^2)-(3900*x)-100 = 0
(-100/3)*x^2-3900*x-100+5.97 = 0
-100/3*x^2-3900*x-94.03 = 0
DELTA = (-3900)^2-(-94.03*(-100/3)*4)
DELTA = 15197462.6666679204
DELTA > 0
x = (15197462.6666679204^(1/2)+3900)/(-100/3*2) or x = (3900-15197462.6666679204^(1/2))/(-100/3*2)
x = -3/200*(15197462.6666679204^(1/2)+3900) or x = -3/200*(3900-15197462.6666679204^(1/2))
x in { -3/200*(15197462.6666679204^(1/2)+3900), -3/200*(3900-15197462.6666679204^(1/2)) }
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