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t in (-oo:+oo)
25/6 = 4*t^2 // - 4*t^2
25/6-(4*t^2) = 0
25/6-4*t^2 = 0
-4*t^2 = -25/6 // : -4
t^2 = 25/24
t^2 = 25/24 // ^ 1/2
abs(t) = (25/24)^(1/2)
t = (25/24)^(1/2) or t = -(25/24)^(1/2)
t in { (25/24)^(1/2), -(25/24)^(1/2) }
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