七年级数学上册计算题专项练习 41.docx
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七年级数学上册计算题专项练习41
5b2-(5a2-4b2)-3b2
5x+(3x-1)-(
-2)
-2(ab+2a2)-(ab-a2)
5a2+
(3ab-3a2)-8ab
-4(b-1)+3(-b+4)
(x2-y)-
(x-y2)+
(x2-y2)
-(-
x+2y)+(
x-2y)
(6s+2)-2(s2-s-4)
-(a2b+
ab2-
a3)-(-3a2b-2ab2)
-
(3mn+2m2-5n2)+(-mn+2m2+
)
(2a3+
a2b+1)+
(a2b-6)
-3(
x3-
y3+
)-4(
x3-
y3+
)
b2-(2a2+4b2)-4b2
4x+(2x-7)-(
-4)
-5(ab+5a2)+(2ab-4a2)
6a2-
(2ab+6a2)-4ab
-4(b+4)+5(-b+4)
(x2-y)-
(x-y2)-
(x2+y2)
-(-
x+4y)+(
x-4y)
(5s-1)-4(s2-s-4)
-(a2b+
ab2-
a3)-(-3a2b+3ab2)
-
(3mn-2m2+3n2)+(-
mn+3m2+
)
(3a3-
a2b+1)+
(a2b-3)
-3(
x3-
y3-
)+3(
x3+
y3+
)
5b2-(2a2-2b2)+4b2
9x+(x-3)-(
-2)
-2(ab+5a2)-(ab-3a2)
a2-
(3ab-6a2)-6ab
-4(b+4)+2(-b-2)
(x2-y)+
(x-y2)-
(x2+y2)
-(-
x+3y)-(
x-4y)
(4s-3)-2(s2+s+2)
-4(a2b+
ab2-
a3)-(-3a2b+3ab2)
-
(3mn+3m2+2n2)+(-
mn+4m2+
)
(a3+
a2b+5)+
(a2b+2)
-4(
x3+
y3-
)+4(
x3-
y3+
)
b2-(4a2-2b2)+4b2
6x+(5x-4)-(
+1)
-5(ab+5a2)+(2ab-a2)
a2+
(3ab-3a2)-7ab
-(b-2)-2(-b-2)
(x2-y)+
(x-y2)-
(x2+y2)
-(-
x+y)+(
x-2y)
(3s+1)-4(s2-s+4)
-4(a2b-
ab2+
a3)-(-4a2b-3ab2)
-
(2mn-2m2-2n2)-(-
mn-3m2+
)
(3a3-
a2b-4)+
(a2b+5)
-2(
x3-
y3+
)-3(
x3+
y3-
)
2b2-(2a2-b2)-b2
9x+(4x-1)-(
+4)
-(ab+2a2)-(ab-a2)
4a2+
(4ab-3a2)-3ab
-(b-1)-5(-b-2)
(x2-y)-
(x-y2)-
(x2+y2)
-(-
x+3y)+(
x-3y)
(5s+4)-2(s2-s-4)
-4(a2b+
ab2-
a3)+(-3a2b+4ab2)
-
(3mn-5m2+5n2)-(-
mn-2m2+
)
(4a3-
a2b-5)+
(a2b-3)
-3(
x3-
y3-
)-3(
x3+
y3+
)
4b2-(5a2+5b2)-3b2
6x+(x-4)-(
+4)
-4(ab+a2)+(2ab-3a2)
5a2-
(2ab+3a2)-8ab
-4(b+3)+4(-b+4)
(x2-y)-
(x-y2)+
(x2-y2)
-(-
x+2y)-(
x-4y)
(3s+1)-2(s2-s+5)
-2(a2b+
ab2-
a3)-(-2a2b-3ab2)
-
(3mn+2m2-5n2)+(-
mn-4m2+
)
(3a3+
a2b-5)+
(a2b-2)
-2(
x3-
y3+
)-3(
x3+
y3-
)
5b2-(3a2-4b2)-b2
3x+(2x-3)-(
+5)
-5(ab+4a2)-(4ab-4a2)
2a2-
(ab+2a2)-2ab
-4(b+3)+3(-b+2)
(x2-y)-
(x-y2)-
(x2-y2)
-(-
x+3y)-(
x-2y)
(4s-1)-3(s2+s+3)
-(a2b+
ab2-
a3)-(-2a2b+3ab2)
-
(4mn-4m2+4n2)+(-
mn+2m2+
)
(3a3+
a2b-5)-
(a2b-6)
-4(
x3-
y3+
)+2(
x3-
y3+
)