因式分解4x^3-8x^2+5x-1
问题描述:
因式分解4x^3-8x^2+5x-1
答
原式=4x³-4x²-(4x²-5x+1)
=4x²(x-1)-(4x-1)((x-1)
=(x-1)(4x²-4x+1)
=(x-1)(2x-1)²