tolong jawab,terima kasih

4x(x²-6x+8) = (x-4)8x²
4x³-24x²+32x= 8x³-32x²
4x³-8x³-24x²+32x²+32x=0
-4x³+8x²+32x=0
x(-4x²+8x+32)=0
x(4x+8)(-x+4)=0
gax bisa ngelanjutin sorry ya