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t in (-oo:+oo)
32*(-1/2)*t^2+12*t-1.76 = 0
12*t-16*t^2-1.76 = 0
DELTA = 12^2-(-16*(-1.76)*4)
DELTA = 31.36
DELTA > 0
t = (31.36^(1/2)-12)/(-16*2) or t = (-31.36^(1/2)-12)/(-16*2)
t = (31.36^(1/2)-12)/(-32) or t = (31.36^(1/2)+12)/32
t in { (31.36^(1/2)-12)/(-32), (31.36^(1/2)+12)/32 }
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