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(3*x^2+5*x)/2 = 350 // - 350
(3*x^2+5*x)/2-350 = 0
(3*x^2+5*x)/2+(-350*2)/2 = 0
3*x^2+5*x-350*2 = 0
3*x^2+5*x-700 = 0
3*x^2+5*x-700 = 0
3*x^2+5*x-700 = 0
DELTA = 5^2-(-700*3*4)
DELTA = 8425
DELTA > 0
x = (8425^(1/2)-5)/(2*3) or x = (-8425^(1/2)-5)/(2*3)
x = (5*337^(1/2)-5)/6 or x = (-5*337^(1/2)-5)/6
(x-((-5*337^(1/2)-5)/6))*(x-((5*337^(1/2)-5)/6)) = 0
((x-((-5*337^(1/2)-5)/6))*(x-((5*337^(1/2)-5)/6)))/2 = 0
((x-((-5*337^(1/2)-5)/6))*(x-((5*337^(1/2)-5)/6)))/2 = 0 // * 2
(x-((-5*337^(1/2)-5)/6))*(x-((5*337^(1/2)-5)/6)) = 0
( x-((-5*337^(1/2)-5)/6) )
x-((-5*337^(1/2)-5)/6) = 0 // + (-5*337^(1/2)-5)/6
x = (-5*337^(1/2)-5)/6
( x-((5*337^(1/2)-5)/6) )
x-((5*337^(1/2)-5)/6) = 0 // + (5*337^(1/2)-5)/6
x = (5*337^(1/2)-5)/6
x in { (-5*337^(1/2)-5)/6, (5*337^(1/2)-5)/6 }
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