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((3*x)/2)*x+x-((4/2)*x)-1 = 0
((3*x)/2)*x+x-2*x-1 = 0
3/2*x^2-x-1 = 0
DELTA = (-1)^2-(-1*3/2*4)
DELTA = 7
DELTA > 0
x = (7^(1/2)+1)/(3/2*2) or x = (1-7^(1/2))/(3/2*2)
x = (7^(1/2)+1)/3 or x = (1-7^(1/2))/3
x in { (1-7^(1/2))/3, (7^(1/2)+1)/3 }
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