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-18x^2=60x+50
We move all terms to the left:
-18x^2-(60x+50)=0
We get rid of parentheses
-18x^2-60x-50=0
a = -18; b = -60; c = -50;
Δ = b2-4ac
Δ = -602-4·(-18)·(-50)
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{60}{-36}=-1+2/3$
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