3(x-3)^2-(13-x)=3x(x-1)+14x^2
3(x^2-6x+9)-13+x=3x^2-3x +14x^2
3x^2-18x+27-13+x=3x^2 - 3x +14x^2
-14x^2-14x-14=0
x^2+x+1=0
= 1-4=-3 => brak rozwiązań
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3(x-3)^2-(13-x)=3x(x-1)+14x^2
3(x^2-6x+9)-13+x=3x^2-3x +14x^2
3x^2-18x+27-13+x=3x^2 - 3x +14x^2
-14x^2-14x-14=0
x^2+x+1=0
= 1-4=-3 => brak rozwiązań