人教版七年级数学上册整式的加减法复习题精选17Word下载.docx
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8ab-3a2b2-4-7ab2+9a2b2-8-9ab
5x3+5x2+8y2-y-5x2-9y-7y2
(a2b+b3)-(7a2b2+b3)
(3x2y+7xy2)-(x2y+6xy2)
9n2+[9n2-(8n2-2n)+9(n2-9n)]
4+3(1-a)-(1-a-a2)+5(1-a+a2-a3)
(-a2b+4ab)-(3a2b+6ab)
(3m2+3m-9)-(8m2+2m+2)
(8a2+2a+9)-3(9-2a-5a2)
-4x2y+6x2y-30c2+15.5c2
-—a2bc+—cba27a2b-0.7a2b
26
—st+—st-910x3y2+4.5x3y2
64
ab+8a2b2-2-4ab2+5a2b2+8+4ab
6x3+8x2+7y2+y+4x2-y+6y2
(-a2b+2b3)-(4a2b2+b3)
(-x2y-xy2)+(3x2y+9xy2)
-6n2-[-5n2-(2n2+8n)-8(n2-8n)]
17+9(1-a)+(1-a-a2)+2(1-a+a2-a3)
(a2b+6ab)+(4a2b+3ab)
(5m2-4m-5)+(9m2+2m+4)
(5c2-6c-2)+4(4-2c+2c2)
7x2y-3x2y-80a2+12.5a2
—a2bc+—cba29a2b-0.6a2b
22
-—pq+—pq-25x2y-3.5x2y
45
2ab-9a2b2+3-6ab2-3a2b2+9+4ab
9x3+6x2-y2-8y-7x2+y-y2
(-3a2b+b3)-(-9a2b2-b3)
(-6x2y+xy2)-(x2y-xy2)
8z2-[-8z2-(7z2+5z)+2(z2+2z)]
9-6(1-a)+(1-a-a2)-5(1-a+a2-a3)
(5a2b-ab)+(3a2b+ab)
(7b2+5b+4)+(8b2-5b+6)
(5s2+5s-9)+3(3+5s+8s2)
-6x2y-8x2y-20s2-6.5s2
—a2bc-—cba2-a2b+0.8a2b
-—ab-—ab+5-2x2y2+5.5x2y2
46
7ab-2a2b2+2+4ab2+6a2b2-7-4ab
2x3-5x2+y2+y+x2-6y+y2
(a2b+5b3)-(-a2b2+b3)
(-x2y+xy2)+(x2y+xy2)
-7n2+[7n2-(3n2-9n)+9(n2+4n)]
20+2(1-a)-(1-a-a2)-2(1-a+a2-a3)
(a2b-ab)+(a2b+7ab)
(7b2+4b-1)+(8b2+4b+4)
(5y2+3y-8)+3(7+3y+9y2)
4x2y+3x2y40n2-12.5n2
-—a2bc+—cba2-a2b-0.8a2b
56
—ab-—ab+1-4x3y2-0.5x3y2
23
ab-8a2b2-5-6ab2-5a2b2+8-8ab
2x3+7x2+y2-y+x2-y+y2
(a2b+5b3)+(a2b2+b3)
(-x2y-9xy2)-(x2y-7xy2)
-6y2+[9y2+(9y2+6y)-7(y2+2y)]
8-7(1-a)-(1-a-a2)-2(1-a+a2-a3)
(8a2b+ab)-(-a2b-7ab)
(7m2+4m-8)-(7m2-2m-5)
(4n2-2n+5)+3(6+5n-2n2)
7x2y+8x2y-70x2-2.5x2
—a2bc+—cba2a2b-0.8a2b
63
—st-—st+48x2y+7.5x2y
34
ab+4a2b2-3+3ab2+8a2b2-7-3ab
9x3+9x2-9y2+3y+x2-9y+4y2
(3a2b+6b3)+(a2b2+3b3)
(-8x2y-xy2)+(x2y-3xy2)
-6a2+[4a2+(3a2-5a)-2(a2+2a)]
10+3(1-a)-(1-a-a2)-4(1-a+a2-a3)
(-a2b-3ab)-(-a2b+ab)
(4t2+4t-7)-(5t2-4t+9)
(3b2-3b+5)+3(3-6b-8b2)
x2y+8x2y90a2-18.5a2
-—a2bc-—cba2-a2b+0.4a2b
66
-—st+—st+85a3b+8.5a3b
33
5ab+4a2b2-5+5ab2-5a2b2-3+6ab
8x3-2x2+y2-8y+x2+4y-y2
(-a2b+9b3)-(5a2b2+b3)
(8x2y+xy2)-(4x2y+4xy2)
3y2-[-