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y^2-5y+25/4=0
We multiply all the terms by the denominator
y^2*4-5y*4+25=0
Wy multiply elements
4y^2-20y+25=0
a = 4; b = -20; c = +25;
Δ = b2-4ac
Δ = -202-4·4·25
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$y=\frac{-b}{2a}=\frac{20}{8}=2+1/2$
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