去括号、合并同类项去括号5c²-(a²-b²-ab)-m+(-n+p-q)xy-(-2x&
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/06 00:31:48
去括号、合并同类项
去括号
5c²-(a²-b²-ab)
-m+(-n+p-q)
xy-(-2x²-y²+z²)
-(2x-y)+(z-1)
先去括号,再合并同类项
5a+(2a-4b)
2x²-3(2x²-x²)
去括号
5x²-[3x-2(2x-3)-4x²]
去括号
5c²-(a²-b²-ab)
-m+(-n+p-q)
xy-(-2x²-y²+z²)
-(2x-y)+(z-1)
先去括号,再合并同类项
5a+(2a-4b)
2x²-3(2x²-x²)
去括号
5x²-[3x-2(2x-3)-4x²]
![去括号、合并同类项去括号5c²-(a²-b²-ab)-m+(-n+p-q)xy-(-2x&](/uploads/image/z/3217663-55-3.jpg?t=%E5%8E%BB%E6%8B%AC%E5%8F%B7%E3%80%81%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%E5%8E%BB%E6%8B%AC%E5%8F%B75c%26%23178%3B-%EF%BC%88a%26%23178%3B-b%26%23178%3B-ab%EF%BC%89-m%2B%EF%BC%88-n%2Bp-q%29xy-%28-2x%26)
去括号
5c²-(a²-b²-ab)=5c²-a²+b²+ab
-m+(-n+p-q)=-m-n+p-q
xy-(-2x²-y²+z²)=xy+2x²+y²-z²
-(2x-y)+(z-1)=-2x+y+z-1
先去括号,再合并同类项
5a+(2a-4b)=5a+2a-4b=7a-4b
2x²-3(2x²-x²)=2x²-6x²+3x²=-x²
去括号
5x²-[3x-2(2x-3)-4x²]=5x²-[3x-2(2x-3)-4x²]
=5x²-[3x-4x+6-4x²]
=5x²-[-x+6-4x²]
=9x²+x-6
5c²-(a²-b²-ab)=5c²-a²+b²+ab
-m+(-n+p-q)=-m-n+p-q
xy-(-2x²-y²+z²)=xy+2x²+y²-z²
-(2x-y)+(z-1)=-2x+y+z-1
先去括号,再合并同类项
5a+(2a-4b)=5a+2a-4b=7a-4b
2x²-3(2x²-x²)=2x²-6x²+3x²=-x²
去括号
5x²-[3x-2(2x-3)-4x²]=5x²-[3x-2(2x-3)-4x²]
=5x²-[3x-4x+6-4x²]
=5x²-[-x+6-4x²]
=9x²+x-6
去括号、合并同类项去括号5c²-(a²-b²-ab)-m+(-n+p-q)xy-(-2x&
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