1)16x^2-32x=0 2)x^3-2x^2-3x=0
1) 16x^2-32x=0 x^2-2x=0 x(x-2)=0 x=0 x-2=0 x=2 2) x(x^2-2x-3)=0 x1=0 x^2-2x-3=0 D=16 x2=(2+4)/2=3 x3=-1