12=-4.9t^2+14t+2

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Solution for 12=-4.9t^2+14t+2 equation: 



12=-4.9t^2+14t+2

We move all terms to the left:

12-(-4.9t^2+14t+2)=0

We get rid of parentheses

4.9t^2-14t-2+12=0

We add all the numbers together, and all the variables

4.9t^2-14t+10=0

a = 4.9; b = -14; c = +10;
Δ = b2-4ac
Δ = -142-4·4.9·10
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$t=\frac{-b}{2a}=\frac{14}{9.8}=1+3.5/8.16666666667$

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