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5(2 x t^2-1) - 50(1 x t^0) + 1 = 0
5(2 x t) - 50(1 x 1) + 1 = 0
10t - 50 + 1 = 0
10t = 50-1
t =
t = 4,9
25t=0+50
25t=50
t = 2