4t^2-60t+225=0

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Solution for 4t^2-60t+225=0 equation: 



4t^2-60t+225=0

a = 4; b = -60; c = +225;
Δ = b2-4ac
Δ = -602-4·4·225
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{60}{8}=7+1/2$

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