七年级数学下册计算题 157文档格式.docx
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(7s-5)-4(s2-s-2)
-3(a2b-ab2+ab2-a3)+(-7a2b+2ab2)
-(3mn-4m2-4n2)-(+mn+5m2+n2)
(a3+a2b+3)+(a2b-8)
-2(x3-y3+)-2(x3-y3+)
-(-x+4y)-(x-5y)
(7s-5)-4(s2+s+6)
-3(a2b-ab2+ab2-a3)-(-2a2b+3ab2)
-(5mn-3m2-3n2)+(+mn+5m2+n2)
(a3+a2b+4)-(a2b-2)
-3(x3-y3+)+2(x3-y3+)
-(-x+5y)-(x-9y)
(5s+9)-2(s2-s+6)
-5(a2b-ab2+ab2-a3)+(-7a2b+3ab2)
-(4mn-4m2+2n2)+(-mn+2m2-n2)
(a3+a2b+4)-(a2b-8)
-5(x3-y3+)+4(x3-y3+)
-(-x+4y)-(x-10y)
(5s+9)-8(s2-s-5)
-8(a2b-ab2+ab2-a3)-(-7a2b+5ab2)
-(3mn-3m2+4n2)-(+mn+6m2-n2)
(a3+a2b+2)-(a2b-8)
-6(x3-y3+)+5(x3-y3+)
-(-x+7y)-(x-2y)
(8s-1)-7(s2-s+5)
-5(a2b-ab2+ab2-a3)+(-7a2b+7ab2)
-(4mn-2m2+2n2)+(+mn+2m2-n2)
(a3+a2b+6)+(a2b-4)
-(-x+2y)+(x-7y)
(5s+7)-6(s2+s-7)
-9(a2b-ab2+ab2-a3)-(-3a2b+2ab2)
-(3mn-4m2+3n2)+(+mn+9m2-n2)
(a3+a2b+4)-(a2b-7)
-4(x3-y3+)+3(x3-y3+)
-(-x+10y)+(x-2y)
(5s+7)-9(s2-s+8)
-6(a2b-ab2+ab2-a3)-(-8a2b+3ab2)
-(2mn-2m2-2n2)+(+mn+5m2+n2)
(a3+a2b+5)+(a2b-6)
-4(x3-y3+)+5(x3-y3+)
-(-x+7y)+(x-5y)
(4s-3)-3(s2+s+7)
-9(a2b-ab2+ab2+a3)+(-2a2b+8ab2)
-(2mn-2m2-2n2)+(+mn+2m2-n2)
(a3+a2b+4)+(a2b-6)
-4(x3-y3+)-6(x3-y3+)
-(-x+10y)-(x-10y)
(5s-7)-3(s2+s-8)
-6(a2b-ab2+ab2+a3)+(-4a2b+7ab2)
-(6mn-3m2-3n2)+(+mn+2m2-n2)