Question 317960
10x^3+20x^2= -6x^3+6x

16x^3+20x^2-6x=0=2x(8x^2+10x-3), Delta=Sqrt(100+12*8)=Sqrt(196)=14

x=0 or x=(-10+14)/16=1/4 or x=-24/16=-3/2