Rozwiąż równanie
x(x+6)=0
x^3-4x^2+2x-8=0
x^3+5x^2-9x-45=0
x=0 v x+6=0
x=-6
x²(x-4)+2(x-4)=0
(x-4)(x²+2)=0
x-4=0 ; x²+2>0
x=4
x²(x+5)-9(x+5)=0
(x+5)(x²-9)=0
(x+5)(x-3)(x+3)=0
x=-5 v x=3 v x=-3
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x(x+6)=0
x=0 v x+6=0
x=-6
x^3-4x^2+2x-8=0
x²(x-4)+2(x-4)=0
(x-4)(x²+2)=0
x-4=0 ; x²+2>0
x=4
x^3+5x^2-9x-45=0
x²(x+5)-9(x+5)=0
(x+5)(x²-9)=0
(x+5)(x-3)(x+3)=0
x=-5 v x=3 v x=-3