(2x-8)^2(x-8)=(2x-8)(x-8)^2
(2x-8)^2(x-8)=2x((x-8)^2)-8((x-8)^2)
(2x-8)^2(x-8)=2x(x-8)^2-8(x-8)^2
(2x-8)^2(x)+(2x-8)^2(-8)=2x(x-8)^2-8(x-8)^2
(2x-8)^2(x)-8(2x-8)^2=2x(x-8)^2-8(x-8)^2
x(2x-8)^2-8(2x-8)^2=2x(x-8)^2-8(x-8)^2
x(2x-8)^2-8(2x-8)^2-2x(x-8)^2+8(x-8)^2=0
4x^3-32x^2+64x-32x^2+256x-512-2x^3+32x^2-128x+8x^2-128+512=0
2x^3-32x^2+64x-32x^2+256x-512+32x^2-128x+8x^2-128x+512=0
2x^3-64x^2+64x+256x-512+32x^2-128x+8x^2-128x+512=0
2x^3-32x^2+64x+256x-512-128x+8x^2-128x+512=0
2x^3-24x^2+64x+256x-512-128x-128x+512=0
2x^3-24x^2+320x-512-128x-128x+512=0
2x^3-24x^2+192x-512-128x+512=0
2x^3-24x^2+64x-512+512=0
2x^3-24x^2+64x+0=0
2x^3-24x^2+64x=0
2x(x-4)(x-8)=0
1)2x=0
2)(x-4)=0
3)(x-8)=0
=>x=0,4,8
Ответ: х= 0 , 4 , 8