七年级数学上册计算题专项练习 27.docx
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七年级数学上册计算题专项练习27
b2-(4a2-4b2)+3b2
3x+(5x-4)-(-4)
-4(ab-5a2)-(5ab-2a2)
6a2+(ab+3a2)-4ab
-4(b-3)+3(-b-3)
(x2-y)-(x-y2)-(x2+y2)
-(-x+3y)+(x-y)
(6s+2)+2(s2-s-4)
-3(a2b-ab2-a3)+(-2a2b+2ab2)
-(4mn-3m2-4n2)-(-mn-2m2+)
(a3+a2b+3)+(a2b-6)
-3(x3-y3+)-2(x3-y3+)
7b2-(2a2-6b2)-4b2
6x+(3x-9)-(+3)
-(ab+5a2)+(2ab-a2)
a2-(4ab-5a2)-5ab
-3(b+1)+3(-b+3)
(x2-y)+(x-y2)-(x2-y2)
-(-x+2y)+(x-3y)
(5s-4)+3(s2+s+2)
-2(a2b-ab2+a3)-(-4a2b+4ab2)
-(5mn-4m2+5n2)+(-mn+4m2+)
(3a3+a2b-2)+(a2b-6)
-4(x3-y3+)-2(x3-y3+)
2b2-(3a2+4b2)-2b2
5x+(x-3)-(-5)
-(ab+2a2)-(4ab-2a2)
2a2+(4ab+4a2)-8ab
-3(b-4)-3(-b-4)
(x2-y)+(x-y2)+(x2-y2)
-(-x+4y)+(x-3y)
(2s-4)+3(s2+s-4)
-(a2b-ab2+a3)+(-2a2b-3ab2)
-(5mn+3m2+5n2)+(-mn-3m2+)
(3a3-a2b-5)+(a2b+4)
-2(x3+y3+)+4(x3-y3-)
9b2-(a2+2b2)+5b2
5x+(5x-5)-(+5)
-2(ab-a2)-(6ab-4a2)
4a2+(4ab+3a2)-5ab
-(b-1)-4(-b-4)
(x2-y)-(x-y2)-(x2-y2)
-(-x+y)+(x-y)
(6s-4)-2(s2-s+3)
-4(a2b+ab2-a3)+(-3a2b+4ab2)
-(4mn+3m2+3n2)+(-mn+4m2-)
(a3+a2b-4)-(a2b+4)
-2(x3-y3+)-4(x3-y3+)
b2-(2a2+3b2)+2b2
8x+(5x-6)-(+1)
-5(ab-5a2)-(3ab-4a2)
5a2+(2ab+3a2)-4ab
-2(b-1)+3(-b-2)
(x2-y)-(x-y2)+(x2+y2)
-(-x+y)-(x-2y)
(3s+2)+4(s2+s-5)
-4(a2b-ab2-a3)+(-2a2b-4ab2)
-(3mn+2m2+4n2)-(-mn-5m2+)
(2a3+a2b+5)-(a2b+5)
-3(x3+y3+)-3(x3-y3+)
9b2-(5a2-b2)-3b2
4x+(4x-4)-(-2)
-(ab-3a2)+(5ab-4a2)
4a2+(4ab+2a2)-3ab
-2(b+1)+5(-b-2)
(x2-y)-(x-y2)+(x2+y2)
-(-x+4y)-(x-3y)
(4s+4)-4(s2-s-5)
-2(a2b+ab2+a3)+(-3a2b+3ab2)
-(4mn+5m2-4n2)+(-mn-2m2+)
(a3-a2b+4)-(a2b-3)
-4(x3+y3-)-2(x3+y3+)
7b2-(3a2-5b2)+3b2
8x+(2x-6)-(+3)
-4(ab+2a2)-(4ab-4a2)
5a2+(ab-4a2)-8ab
-3(b+1)-4(-b-3)
(x2-y)-(x-y2)-(x2+y2)
-(-x+y)+(x-3y)
(5s+4)+4(s2-s-4)
-4(a2b+ab2+a3)+(-2a2b-3ab2)
-(3mn-5m2-4n2)-(-mn+4m2+)
(a3-a2b+2)+(a2b+2)
-2(x3+y3-)-4(x3+y3-)