7y-7y2=7y

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Solution for 7y-7y2=7y equation: 



7y-7y^2=7y

We move all terms to the left:

7y-7y^2-(7y)=0

We add all the numbers together, and all the variables

-7y^2=0

a = -7; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-7)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$y=\frac{-b}{2a}=\frac{0}{-14}=0$

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