1)-2(-y+1)+3(2x+y-2)2)-2a`(a-b)3)(3a+2y)`4xy4)(-4m+3n)`(-2mn)5)(2a-b)(2a+b)6)(x-y)(x+2y)7)(x-3)(x+1)8)(-3x+y)(2X-y)9)(a+3b)(a-2b)10)-2x`(x-y)+3y(2x+y)11)(x-4y)(x+y)-(2x+3y)(x-y)可以的话就在加20
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/16 16:22:44
1)-2(-y+1)+3(2x+y-2)
2)-2a`(a-b)
3)(3a+2y)`4xy
4)(-4m+3n)`(-2mn)
5)(2a-b)(2a+b)
6)(x-y)(x+2y)
7)(x-3)(x+1)
8)(-3x+y)(2X-y)
9)(a+3b)(a-2b)
10)-2x`(x-y)+3y(2x+y)
11)(x-4y)(x+y)-(2x+3y)(x-y)
可以的话
就在加20
你打出这么多题目用的时间都可以算完了.
1)6x+5y-8
2)-2a平方+2ab
3) 12axy+8x乘(y的平方)
4)(-4m+3n)`(-2mn) =8m方n-6mn方
5)(2a-b)(2a+b)=4a方-b方
6)(x-y)(x+2y)=x方+xy-2y方
7)(x-3)(x+1)=x方-2x-3
8)(-3x+y)(2X-y)=-6x方+5xy-y方
9)(a+3b)(a-2b)=a方+ab-6b方
10)-2x`(x-y)+3y(2x+y)=-2x方+8xy+3y方
11)(x-4y)(x+y)-(2x+3y)(x-y)=-x方-4xy-y方
自己读出来,表达用的中文
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