计算x²-(x-2)²

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 20:49:26
计算x²-(x-2)²计算x²-(x-2)²计算x²-(x-2)²x²-(x-2)²=x²-(x²-

计算x²-(x-2)²
计算x²-(x-2)²

计算x²-(x-2)²
x²-(x-2)²
=x²-(x²-4x+4)
=x²-x²+4x-4
=4x-4

x²-(x-2)²
=(x+X-2)(x-x+2)
=4(x-1)


x^2-(x-2)^2
=x^2-(x^2-4x+4)
=4x-4.

=x²-(x²-4x+4)
=x²-x²+4x-4
=4x-4

x^2-(x-2)^2
=x^2-(x^2-4x+4)
=x^2-x^2-4x+4
=-4x+4
如有帮助,请采纳,谢谢!