k2+49=14k

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Solution for k2+49=14k equation: 



k2+49=14k

We move all terms to the left:

k2+49-(14k)=0

We add all the numbers together, and all the variables

k^2-14k+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:
$k=\frac{-b}{2a}=\frac{14}{2}=7$

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