七年级数学下册计算题 105.docx
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七年级数学下册计算题105
-6(
x3-
y3+
)+6(
x3-
y3+
)
-(-
x+6y)-(
x-8y)
(5s+9)-5(s2+s+8)
-9(a2b-
ab2+
ab2+
a3)-(-2a2b+2ab2)
-
(2mn-3m2+4n2)+(+
mn+8m2+
n2)
(a3+
a2b+3)-
(a2b-9)
-5(
x3-
y3+
)+5(
x3-
y3+
)
-(-
x+3y)+(
x-6y)
(3s+8)-6(s2+s-4)
-5(a2b-
ab2+
ab2+
a3)-(-8a2b+2ab2)
-
(4mn-4m2-4n2)+(-
mn+3m2+
n2)
(a3+
a2b+1)-
(a2b-5)
-3(
x3-
y3+
)-4(
x3-
y3+
)
-(-
x+5y)-(
x-3y)
(3s-9)-8(s2+s+4)
-4(a2b-
ab2+
ab2+
a3)-(-4a2b+4ab2)
-
(5mn-2m2+4n2)-(-
mn+3m2-
n2)
(a3+
a2b+8)+
(a2b-5)
-5(
x3-
y3+
)-2(
x3-
y3+
)
-(-
x+5y)+(
x-2y)
(5s+8)-8(s2-s-3)
-3(a2b-
ab2+
ab2-
a3)-(-3a2b+8ab2)
-
(2mn-3m2-2n2)+(-
mn+3m2-
n2)
(a3+
a2b+5)+
(a2b-2)
-3(
x3-
y3+
)-6(
x3-
y3+
)
-(-
x+5y)+(
x-7y)
(8s+7)-8(s2-s-4)
-6(a2b-
ab2+
ab2+
a3)-(-4a2b+3ab2)
-
(2mn-4m2-3n2)+(+
mn+9m2+
n2)
(a3+
a2b+7)-
(a2b-6)
-6(
x3-
y3+
)-5(
x3-
y3+
)
-(-
x+8y)+(
x-10y)
(3s-5)-9(s2-s-6)
-3(a2b-
ab2+
ab2+
a3)-(-8a2b+7ab2)
-
(2mn-4m2-4n2)+(-
mn+3m2+
n2)
(a3+
a2b+9)-
(a2b-7)
-2(
x3-
y3+
)-4(
x3-
y3+
)
-(-
x+2y)-(
x-3y)
(2s+7)-8(s2+s-7)
-3(a2b-
ab2+
ab2-
a3)+(-7a2b+8ab2)
-
(2mn-3m2+4n2)-(-
mn+5m2+
n2)
(a3+
a2b+9)+
(a2b-3)
-4(
x3-
y3+
)+6(
x3-
y3+
)
-(-
x+8y)-(
x-3y)
(2s+9)-3(s2+s-4)
-7(a2b-
ab2+
ab2-
a3)+(-4a2b+7ab2)
-
(4mn-3m2+3n2)+(+
mn+7m2+
n2)
(a3+
a2b+7)+
(a2b-3)
-4(
x3-
y3+
)-2(
x3-
y3+
)
-(-
x+8y)-(
x-6y)
(7s-5)-4(s2-s+3)
-6(a2b-
ab2+
ab2-
a3)+(-5a2b+6ab2)
-
(6mn-4m2+2n2)+(+
mn+5m2+
n2)
(a3+
a2b+8)+
(a2b-9)
-2(
x3-
y3+
)-2(
x3-
y3+
)