3x括号x的平方减2x加1括号减2x平方括号x减1括号

3X(X²-2X+1)-2X²(X-1)
=3X(X-1)²-2X²(X-1)
=3X(X-1)(X-1)-2X²(X-1)
=X(X-1)[3(X-1)-2X]
=X(X-1）[3X-3-2X]
=X(X-1)(X-3)

3x(x²-2x+1)-2x²(x-1)
=3x(x-1)²-2x²(x-1)
=(x-1)[3x(x-1)-2x²]
=(x-1)(3x²-3x-2x²)
=(x-1)(x²-3x)
=x(x-1)(x-3)本回答被网友采纳