七年级数学下册计算题 69.docx
《七年级数学下册计算题 69.docx》由会员分享,可在线阅读,更多相关《七年级数学下册计算题 69.docx(15页珍藏版)》请在冰豆网上搜索。
七年级数学下册计算题69
-5(
x3-
y3+
)+5(
x3-
y3+
)
-(-
x+3y)+(
x-10y)
(5s+2)-6(s2-s+7)
-7(a2b-
ab2+
ab2+
a3)+(-7a2b+7ab2)
-
(6mn-3m2+3n2)+(-
mn+9m2+
n2)
(a3+
a2b+4)-
(a2b-8)
-2(
x3-
y3+
)-6(
x3-
y3+
)
-(-
x+6y)+(
x-10y)
(4s+6)-6(s2-s-7)
-2(a2b-
ab2+
ab2-
a3)-(-7a2b+5ab2)
-
(4mn-4m2-3n2)-(-
mn+3m2+
n2)
(a3+
a2b+5)+
(a2b-7)
-5(
x3-
y3+
)+2(
x3-
y3+
)
-(-
x+10y)-(
x-3y)
(7s+1)-8(s2-s-9)
-6(a2b-
ab2+
ab2-
a3)+(-8a2b+8ab2)
-
(3mn-4m2+4n2)+(+
mn+8m2-
n2)
(a3+
a2b+1)+
(a2b-4)
-5(
x3-
y3+
)-2(
x3-
y3+
)
-(-
x+10y)+(
x-8y)
(8s+4)-9(s2+s+7)
-8(a2b-
ab2+
ab2-
a3)+(-5a2b+3ab2)
-
(5mn-3m2+2n2)-(-
mn+2m2-
n2)
(a3+
a2b+6)+
(a2b-3)
-2(
x3-
y3+
)-6(
x3-
y3+
)
-(-
x+7y)-(
x-2y)
(5s+9)-8(s2+s-4)
-8(a2b-
ab2+
ab2-
a3)+(-7a2b+3ab2)
-
(2mn-4m2-3n2)-(-
mn+8m2-
n2)
(a3+
a2b+1)+
(a2b-6)
-6(
x3-
y3+
)-3(
x3-
y3+
)
-(-
x+9y)-(
x-8y)
(6s+3)-3(s2+s+2)
-7(a2b-
ab2+
ab2-
a3)+(-9a2b+8ab2)
-
(3mn-3m2-2n2)-(+
mn+5m2+
n2)
(a3+
a2b+7)+
(a2b-5)
-2(
x3-
y3+
)+5(
x3-
y3+
)
-(-
x+7y)+(
x-5y)
(9s+9)-9(s2+s-3)
-8(a2b-
ab2+
ab2-
a3)-(-7a2b+6ab2)
-
(3mn-4m2+3n2)-(+
mn+2m2-
n2)
(a3+
a2b+4)+
(a2b-9)
-3(
x3-
y3+
)-6(
x3-
y3+
)
-(-
x+6y)-(
x-7y)
(7s-6)-4(s2-s+2)
-6(a2b-
ab2+
ab2+
a3)+(-3a2b+7ab2)
-
(6mn-3m2-3n2)+(-
mn+4m2-
n2)
(a3+
a2b+2)-
(a2b-7)
-6(
x3-
y3+
)+3(
x3-
y3+
)
-(-
x+5y)-(
x-4y)
(2s-8)-4(s2-s+6)
-5(a2b-
ab2+
ab2+
a3)+(-3a2b+9ab2)
-
(5mn-2m2-4n2)+(-
mn+6m2+
n2)
(a3+
a2b+3)+
(a2b-2)
-3(
x3-
y3+
)+3(
x3-
y3+
)