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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(x*(3*x+6)-47+65)/x-54+23 = 1765 // - 1765
(x*(3*x+6)-47+65)/x-1765-54+23 = 0
(x*(3*x+6)-47+65)/x+(-1765*x)/x+(-54*x)/x+(23*x)/x = 0
x*(3*x+6)-1765*x-54*x+23*x-47+65 = 0
3*x^2+6*x-1765*x-54*x+23*x-47+65 = 0
3*x^2+6*x-1765*x-54*x+23*x+18 = 0
3*x^2-1759*x-54*x+23*x+18 = 0
3*x^2-1813*x+23*x+18 = 0
3*x^2-1790*x+18 = 0
3*x^2-1790*x+18 = 0
3*x^2-1790*x+18 = 0
DELTA = (-1790)^2-(3*4*18)
DELTA = 3203884
DELTA > 0
x = (3203884^(1/2)+1790)/(2*3) or x = (1790-3203884^(1/2))/(2*3)
x = (2*800971^(1/2)+1790)/6 or x = (1790-2*800971^(1/2))/6
(x-((1790-2*800971^(1/2))/6))*(x-((2*800971^(1/2)+1790)/6)) = 0
((x-((1790-2*800971^(1/2))/6))*(x-((2*800971^(1/2)+1790)/6)))/x = 0
((x-((1790-2*800971^(1/2))/6))*(x-((2*800971^(1/2)+1790)/6)))/x = 0 // * x
(x-((1790-2*800971^(1/2))/6))*(x-((2*800971^(1/2)+1790)/6)) = 0
( x-((1790-2*800971^(1/2))/6) )
x-((1790-2*800971^(1/2))/6) = 0 // + (1790-2*800971^(1/2))/6
x = (1790-2*800971^(1/2))/6
( x-((2*800971^(1/2)+1790)/6) )
x-((2*800971^(1/2)+1790)/6) = 0 // + (2*800971^(1/2)+1790)/6
x = (2*800971^(1/2)+1790)/6
x in { (1790-2*800971^(1/2))/6, (2*800971^(1/2)+1790)/6 }
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