七年级数学上册计算题专项练习 173Word文档下载推荐.docx
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x+3y)-(
x-2y)
(6s-3)+4(s2-s-5)
-3(a2b+
ab2-
a3)+(-3a2b+2ab2)
-
(2mn-3m2+5n2)+(-
mn+3m2+
)
(3a3-
a2b-3)+
(a2b+1)
-3(
x3-
y3-
)+2(
2b2-(5a2+6b2)+5b2
3x+(4x-5)-(
+5)
-4(ab-3a2)+(4ab-a2)
5a2-
(4ab-3a2)-6ab
-(b-3)+4(-b+4)
(x2-y)-
(x2-y2)
x+3y)+(
(4s+4)-3(s2-s+2)
-4(a2b-
ab2+
a3)+(-4a2b+3ab2)
(5mn-4m2-3n2)-(-
mn-3m2-
(a3+
a2b-1)-
(a2b-2)
-2(
x3+
)-4(
5b2-(2a2-4b2)+6b2
5x+(4x-1)-(
-4)
-3(ab-2a2)+(3ab-a2)
2a2+
(2ab-a2)-2ab
-2(b+2)+4(-b+3)
x+4y)+(
x-y)
(4s-3)-2(s2-s+3)
-4(a2b+
a3)-(-4a2b+4ab2)
(2mn+4m2+2n2)+(-
mn+4m2+
(3a3+
a2b-5)+
(a2b+6)
-4(
y3+
)+4(
6b2-(4a2-4b2)+6b2
7x+(x-7)-(
+1)
-(ab-5a2)-(3ab-3a2)
6a2+
(3ab-a2)-3ab
-(b+2)-3(-b+3)
(3s+4)-3(s2+s-5)
(5mn+2m2+5n2)-(-mn+4m2+
(2a3-
a2b+5)-
(a2b-4)
)-2(
4b2-(5a2-3b2)-5b2
9x+(4x-6)-(
+2)
-3(ab-a2)+(2ab-4a2)
3a2-
(2ab-5a2)-4ab
-3(b+1)-4(-b-4)
x+y)+(
x-3y)
(5s-1)+4(s2+s+4)
a3)+(-2a2b-4ab2)
(5mn-5m2+2n2)+(-
mn+3m2-
a2b-4)-
(a2b+2)
2b2-(2a2+3b2)-2b2
5x+(x-8)-(
-5(ab+a2)-(3ab-3a2)
(4ab+5a2)-ab
-4(b-4)-3(-b-4)
(4s+3)+4(s2-s+3)
a3)-(-4a2b-2ab2)
(5mn-2m2+4n2)+(-
mn-5m2+
6b2-(3a2-3b2)+5b2
9x+(3x-9)-(
-2(ab+2a2)+(6ab-3a2)
a2-
(4ab-a2)-ab
-4(b+3)+2(-b+4)
(x-y2)+
x+2y)+(
(6s-1)-4(s2-s-4)
-(a2b+
a3)+(-4a2b-4ab2)
(2mn-3m2+5n2)+(-mn+4m2-
a2b+2)+
(a2b-6)
)-3(