七年级数学上册计算题专项练习 426.docx
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七年级数学上册计算题专项练习426
9b2-(2a2-4b2)+3b2
7x+(x-3)-(+4)
-4(ab+3a2)-(3ab-4a2)
5a2+(ab+2a2)-6ab
-3(b+4)-5(-b+2)
(x2-y)-(x-y2)+(x2+y2)
-(-x+y)+(x-3y)
(4s+3)+2(s2-s-4)
-4(a2b-ab2-a3)-(-2a2b+4ab2)
-(3mn-5m2+5n2)-(-mn+2m2-)
(2a3+a2b-1)-(a2b+1)
-4(x3+y3-)+4(x3+y3-)
b2-(a2+5b2)-5b2
8x+(2x-9)-(+3)
-(ab+4a2)+(2ab-2a2)
2a2+(ab-6a2)-8ab
-(b-1)-4(-b+2)
(x2-y)-(x-y2)+(x2-y2)
-(-x+y)-(x-4y)
(4s-4)+2(s2+s-4)
-(a2b-ab2-a3)-(-3a2b+2ab2)
-(4mn+3m2+5n2)-(-mn+5m2-)
(2a3-a2b-3)-(a2b-4)
-4(x3-y3+)-4(x3+y3-)
b2-(2a2+5b2)+3b2
2x+(x-1)-(+1)
-5(ab-3a2)-(4ab-3a2)
3a2-(ab+2a2)-7ab
-4(b+4)-2(-b+2)
(x2-y)-(x-y2)-(x2-y2)
-(-x+4y)+(x-2y)
(6s+1)-4(s2-s+2)
-2(a2b+ab2+a3)+(-2a2b+4ab2)
-(5mn-3m2-4n2)+(-mn-3m2-)
(2a3+a2b-4)-(a2b+1)
-3(x3-y3+)-3(x3-y3+)
3b2-(4a2+5b2)-2b2
9x+(3x-2)-(+4)
-4(ab+a2)-(6ab-3a2)
4a2+(2ab+3a2)-7ab
-2(b+1)+4(-b-3)
(x2-y)+(x-y2)-(x2+y2)
-(-x+4y)+(x-4y)
(2s-2)+2(s2-s+4)
-2(a2b+ab2-a3)-(-2a2b-2ab2)
-(4mn-3m2+2n2)+(-mn+4m2-)
(3a3+a2b-2)-(a2b-1)
-3(x3-y3-)-3(x3+y3+)
2b2-(a2+5b2)+6b2
2x+(x-7)-(-3)
-(ab+2a2)+(5ab-2a2)
a2-(3ab+6a2)-3ab
-(b-2)+3(-b+2)
(x2-y)-(x-y2)-(x2+y2)
-(-x+y)-(x-2y)
(6s-4)-4(s2-s+4)
-4(a2b+ab2-a3)-(-4a2b-4ab2)
-(4mn-2m2+2n2)-(-mn-5m2+)
(a3+a2b+5)-(a2b-3)
-4(x3+y3+)+4(x3-y3-)
7b2-(3a2-b2)-3b2
9x+(4x-3)-(-4)
-(ab-a2)-(ab-4a2)
4a2-(2ab+6a2)-8ab
-2(b+2)-3(-b-4)
(x2-y)-(x-y2)+(x2-y2)
-(-x+y)+(x-2y)
(4s-1)-4(s2-s+3)
-3(a2b+ab2+a3)-(-3a2b-2ab2)
-(3mn-2m2+2n2)+(-mn-3m2-)
(4a3+a2b-2)-(a2b-5)
-3(x3-y3+)+2(x3-y3+)
5b2-(a2-5b2)+6b2
7x+(3x-7)-(+1)
-2(ab+3a2)+(4ab-a2)
3a2+(2ab-4a2)-7ab
-(b+2)-3(-b+4)
(x2-y)+(x-y2)+(x2+y2)
-(-x+y)-(x-3y)
(5s+1)+4(s2-s-4)
-(a2b-ab2+a3)-(-4a2b-2ab2)
-(4mn-3m2-3n2)+(-mn+5m2-)
(a3-a2b+1)-(a2b-1)
-3(x3-y3-)-4(x3+y3-)