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t in (-oo:+oo)
7*t^2+(5/7)*t^2-(5*7*t^2)-((7/35)*t^2)-(36*t)-(48*t)+34*t-(12*t)+1 = 0
7*t^2+(5/7)*t^2-35*t^2+(-1/5)*t^2-36*t-48*t+34*t-12*t+1 = 0
1-962/35*t^2-62*t = 0
DELTA = (-62)^2-(-962/35*1*4)
DELTA = 138388/35
DELTA > 0
t = ((138388/35)^(1/2)+62)/(-962/35*2) or t = (62-(138388/35)^(1/2))/(-962/35*2)
t = -35/1924*((138388/35)^(1/2)+62) or t = -35/1924*(62-(138388/35)^(1/2))
t in { -35/1924*((138388/35)^(1/2)+62), -35/1924*(62-(138388/35)^(1/2)) }
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