b2-14b=-49

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Solution for b2-14b=-49 equation: 



b2-14b=-49

We move all terms to the left:

b2-14b-(-49)=0

We add all the numbers together, and all the variables

b^2-14b+49=0

a = 1; b = -14; c = +49;
Δ = b2-4ac
Δ = -142-4·1·49
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$b=\frac{-b}{2a}=\frac{14}{2}=7$

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