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x^2-((3/2)*x)-23-16 = 0
x^2+(-3/2)*x-23-16 = 0
x^2-3/2*x-39 = 0
DELTA = (-3/2)^2-(-39*1*4)
DELTA = 633/4
DELTA > 0
x = ((633/4)^(1/2)+3/2)/(1*2) or x = (3/2-(633/4)^(1/2))/(1*2)
x = ((633/4)^(1/2)+3/2)/2 or x = (3/2-(633/4)^(1/2))/2
x in { (3/2-(633/4)^(1/2))/2, ((633/4)^(1/2)+3/2)/2 }
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