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t in (-oo:+oo)
t^2-(5*t)-(5/16) = 0
t^2-5*t-5/16 = 0
t^2-5*t-5/16 = 0
DELTA = (-5)^2-(-5/16*1*4)
DELTA = 105/4
DELTA > 0
t = ((105/4)^(1/2)+5)/(1*2) or t = (5-(105/4)^(1/2))/(1*2)
t = ((105/4)^(1/2)+5)/2 or t = (5-(105/4)^(1/2))/2
t in { (5-(105/4)^(1/2))/2, ((105/4)^(1/2)+5)/2 }
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