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64x^2+53x+9=5x
We move all terms to the left:
64x^2+53x+9-(5x)=0
We add all the numbers together, and all the variables
64x^2+48x+9=0
a = 64; b = 48; c = +9;
Δ = b2-4ac
Δ = 482-4·64·9
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{-48}{128}=-3/8$
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