Potrzebuje na jutro rozwiązać to równianie http://scr.hu/screenshooter/8604266/qwnghfi 5x^3-15x^2=x-3
5x³-15x²-x+3=0
5x²(x-3)-1(x-3)=0
(5x²-1)(x-3)=0
(x-√1/5)(x+√1/5)(x-3)=0
x=√1/5∨x=-√1/5∨x=3
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5x³-15x²-x+3=0
5x²(x-3)-1(x-3)=0
(5x²-1)(x-3)=0
(x-√1/5)(x+√1/5)(x-3)=0
x=√1/5∨x=-√1/5∨x=3