你好

(4x)^3-(8x)^2+4x
=4x*4x^2-16x^2+4x
=4x*4x^2-4x*4x+4x
=4x*(4x^2-4x+1)
=4x*[(2x)^2-2*2x*1+1^2]
=4x*(2x-1)^2
有什么不懂请追问,我会为您详细解答,望采纳,谢谢!