rozłóż wielomian w(x) =x⁴ +5x² - x³ -5x na czynniki możliwie najniższego stopnia
x^4-x^3+5x^2-5x=x(x^3-x^2+5x-5)=x[x^2(x-1)+5(x-1)]=x(x^2+5)(x-1)
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x^4-x^3+5x^2-5x=x(x^3-x^2+5x-5)=x[x^2(x-1)+5(x-1)]=x(x^2+5)(x-1)