3x括号x的平方减2x加1括号减2x平方括号x减1括号
答案:2 悬赏:40
解决时间 2021-03-23 17:21
- 提问者网友：几叶到寒
- 2021-03-23 13:00
3x括号x的平方减2x加1括号减2x平方括号x减1括号
最佳答案
- 二级知识专家网友：忘川信使
- 2021-03-23 13:35
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)
=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)
全部回答
- 1楼网友：人间朝暮
- 2021-03-23 14:59
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(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)
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