(x-2)^3+(x+2)^3=2x(x^2-1)+3
3x-6+3x+6=2x(2x-1)+3 ; 6x=4x2-2x+3. 4x2-2x+3=6x. 4x2-2x+3-6x=0. 2x(2x-1)+3(1-2x)=0. -2x(1-2x)+3(1-2x)=0. (1-2x)(3-2x)=0. 1-2x=0. -2x=-1. x=1/2. 3-2x=0. -2x=-3. x=3/2.