5x-[-x平方-(x+2)]如何化简

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/29 22:48:39
5x-[-x平方-(x+2)]如何化简5x-[-x平方-(x+2)]如何化简5x-[-x平方-(x+2)]如何化简5x-[-x²-(x+2)]=5x-(-x²-x-2)=5x+x&

5x-[-x平方-(x+2)]如何化简
5x-[-x平方-(x+2)]如何化简

5x-[-x平方-(x+2)]如何化简
5x-[-x²-(x+2)]
=5x-(-x²-x-2)
=5x+x²+x+2
=x²+6x+2

5x-[-x平方-(x+2)]

=5x-(-x平方-x-2)
=5x+x平方+x+2
=6x+x平方+2

5x-[-x²-(x+2)]
=5x-(-x²-x-2)
=5x+x²+x+2
=x²+6x+2
=(x+3)²-7