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t^2-2t+6=5
We move all terms to the left:
t^2-2t+6-(5)=0
We add all the numbers together, and all the variables
t^2-2t+1=0
a = 1; b = -2; c = +1;
Δ = b2-4ac
Δ = -22-4·1·1
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$t=\frac{-b}{2a}=\frac{2}{2}=1$
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