七年级数学上册计算题专项练习 465.docx
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七年级数学上册计算题专项练习465
6b2-(a2+6b2)-2b2
9x+(3x-9)-(
+4)
-(ab+5a2)+(4ab-3a2)
a2+
(3ab+a2)-7ab
-3(b-1)-5(-b+4)
(x2-y)+
(x-y2)+
(x2-y2)
-(-
x+y)-(
x-y)
(5s-1)-3(s2-s+2)
-3(a2b-
ab2-
a3)+(-3a2b+4ab2)
-
(4mn+2m2-5n2)-(-
mn+5m2+
)
(4a3+
a2b+3)+
(a2b-6)
-3(
x3+
y3+
)+4(
x3-
y3-
)
8b2-(3a2+2b2)-4b2
x+(2x-1)-(
-2)
-2(ab-2a2)+(3ab-a2)
a2-
(2ab-5a2)-4ab
-2(b-4)-3(-b-4)
(x2-y)+
(x-y2)-
(x2-y2)
-(-
x+3y)+(
x-y)
(6s-4)-4(s2+s+3)
-2(a2b+
ab2-
a3)-(-3a2b-3ab2)
-
(5mn-5m2+2n2)-(-
mn+4m2-
)
(3a3+
a2b+1)+
(a2b-3)
-3(
x3+
y3-
)-4(
x3-
y3+
)
6b2-(2a2+b2)+4b2
5x+(2x-9)-(
-4)
-5(ab-3a2)-(ab-a2)
a2-
(ab-4a2)-4ab
-(b-1)-5(-b-3)
(x2-y)-
(x-y2)-
(x2-y2)
-(-
x+2y)-(
x-3y)
(2s-1)-3(s2+s+3)
-(a2b-
ab2+
a3)-(-4a2b-4ab2)
-
(2mn+3m2-4n2)-(-
mn+3m2+
)
(a3+
a2b+5)-
(a2b-3)
-2(
x3+
y3-
)+2(
x3-
y3-
)
b2-(2a2-4b2)+3b2
7x+(5x-7)-(
+5)
-4(ab-a2)-(ab-2a2)
5a2+
(4ab-4a2)-7ab
-2(b-1)-3(-b+3)
(x2-y)-
(x-y2)+
(x2+y2)
-(-
x+3y)-(
x-y)
(3s+4)-4(s2+s+2)
-2(a2b-
ab2-
a3)+(-2a2b-2ab2)
-
(4mn-5m2-4n2)+(-
mn-5m2+
)
(a3-
a2b-1)+
(a2b-2)
-3(
x3-
y3-
)-2(
x3-
y3-
)
7b2-(a2-2b2)-5b2
8x+(x-4)-(
-5)
-2(ab+3a2)-(5ab-a2)
3a2-
(2ab-a2)-3ab
-(b-1)-5(-b+4)
(x2-y)+
(x-y2)+
(x2+y2)
-(-
x+y)-(
x-2y)
(4s-3)-2(s2+s+4)
-4(a2b-
ab2-
a3)-(-3a2b+3ab2)
-
(3mn+2m2+5n2)+(-mn+3m2+
)
(3a3-
a2b+2)-
(a2b-2)
-4(
x3-
y3+
)-3(
x3-
y3+
)
7b2-(2a2-3b2)-3b2
6x+(2x-7)-(
-4)
-3(ab-4a2)-(3ab-a2)
3a2+
(ab-4a2)-6ab
-4(b-4)+4(-b+2)
(x2-y)+
(x-y2)+
(x2+y2)
-(-
x+y)+(
x-y)
(4s+3)+4(s2-s+4)
-(a2b-
ab2-
a3)-(-3a2b-4ab2)
-
(4mn-2m2-2n2)+(-mn+2m2-
)
(2a3-
a2b-5)-
(a2b-5)
-3(
x3+
y3+
)-4(
x3-
y3-
)
b2-(a2+5b2)+4b2
4x+(2x-2)-(
-2)
-(ab+a2)+(2ab-4a2)
4a2+
(3ab-4a2)-2ab
-3(b-4)+5(-b+4)
(x2-y)+
(x-y2)-
(x2+y2)
-(-
x+3y)+(
x-y)
(5s+2)+4(s2+s+5)
-4(a2b+
ab2-
a3)+(-2a2b+4ab2)
-
(4mn-3m2-4n2)+(-mn-2m2-
)
(3a3-
a2b+5)-
(a2b-1)
-4(
x3+
y3+
)+4(
x3+
y3+
)