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x in (-oo:+oo)
((7*x-5)^2)/3-2 = 14 // - 14
((7*x-5)^2)/3-14-2 = 0
((7*x-5)^2)/3+(-14*3)/3+(-2*3)/3 = 0
(7*x-5)^2-14*3-2*3 = 0
49*x^2-70*x-17-6 = 0
49*x^2-70*x-23 = 0
49*x^2-70*x-23 = 0
49*x^2-70*x-23 = 0
DELTA = (-70)^2-(-23*4*49)
DELTA = 9408
DELTA > 0
x = (9408^(1/2)+70)/(2*49) or x = (70-9408^(1/2))/(2*49)
x = (56*3^(1/2)+70)/98 or x = (70-56*3^(1/2))/98
(x-((70-56*3^(1/2))/98))*(x-((56*3^(1/2)+70)/98)) = 0
((x-((70-56*3^(1/2))/98))*(x-((56*3^(1/2)+70)/98)))/3 = 0
((x-((70-56*3^(1/2))/98))*(x-((56*3^(1/2)+70)/98)))/3 = 0 // * 3
(x-((70-56*3^(1/2))/98))*(x-((56*3^(1/2)+70)/98)) = 0
( x-((56*3^(1/2)+70)/98) )
x-((56*3^(1/2)+70)/98) = 0 // + (56*3^(1/2)+70)/98
x = (56*3^(1/2)+70)/98
( x-((70-56*3^(1/2))/98) )
x-((70-56*3^(1/2))/98) = 0 // + (70-56*3^(1/2))/98
x = (70-56*3^(1/2))/98
x in { (56*3^(1/2)+70)/98, (70-56*3^(1/2))/98 }
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