rozwiąż x³+19x²+118x-320=0

x³+19x²+118x-320=0 (x³+19x²)+(118x-320)=0 x²(x+19)+2(59x-160)=0 (x²+2)(x+19)(59x-160)=0 x²+2=0 i x+19=0 i 59x-160=0 x²=-2 i x=-19 i 59x=-160/:59 x=0 x -160/59