七年级数学整式的加减法计算题大全 500.docx
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七年级数学整式的加减法计算题大全500
x2+(2x2+5x+6)+(3x+1)
y2+(3x2-y)+(9x2-6y2)
7
(9x2+6xy-—x)-(7x2-9xy+9x)
8
81
(—xy-3y2+1)-(x2+—xy+9y2+6)
75
25
(xy+—y-—)+(xy+x+2)
36
(4y-2x-8z2)+(9y+x+5z2)
(2m2-8m+1)+(8m-6n+4)
(4x2+3x+6)-7(x2-8x)
-9(x2+8)-4(x2-7)
-(x2y-5xy+5)+4(x2y-3xy-9)
19
(—x2-19x-15y)+(—x2-17x+18y)
88
11
-—(7k3-4k2+2)+—(9k3-2k2-7k)
45
(6k2-9k)-(3k2+4k-6)
(6a2-3a+6b)-(6a2+7a+4b)
6x2+(8x2-5x+7)+(5x+3)
4y2+(3x2+y)-(7x2+7y2)
1
(6x2+4xy+—x)-(3x2-6xy-3x)
3
77
(—xy+6y2-1)-(x2-—xy-2y2-6)
68
74
(xy+—y-—)+(xy+x+1)
83
(9y+7x+9z2)+(y-2x+9z2)
(3m2+6m-4)+(8m-n-5)
(3x2+9x-6)+7(3x2+x)
-9(x2-3)-3(x2+5)
-(x2y-3xy+6)+9(x2y+4xy+3)
75
(—x2+12x+11y)+(—x2+16x-24y)
66
11
-—(3k3+5k2+2)-—(6k3+5k2-8k)
65
(k2-7k)-(3k2+2k-7)
(2a2+a-b)+(5a2-a+5b)
4x2+(x2+x-3)-(x-8)
7y2+(4x2-y)+(9x2+y2)
9
(5x2+9xy-—x)+(x2+3xy+9x)
8
11
(—xy+2y2-6)-(x2-—xy-5y2-6)
55
11
(xy-—y-—)-(xy-x+1)
77
(2y-x-9z2)+(3y+5x+9z2)
(m2-9m-4)+(7m+n-9)
(7x2+4x-3)-2(3x2-9x)
-4(x2+6)+3(x2+4)
-(x2y-9xy+2)+2(x2y-3xy+6)
19
(—x2-21x+18y)+(—x2+19x+26y)
88
11
-—(k3-4k2+3)-—(9k3-7k2-7k)
43
(k2+6k)+(k2+6k+2)
(6a2+2a-9b)+(9a2-a-b)
9x2-(2x2+2x-5)-(x-4)
5y2+(x2-y)+(4x2-3y2)
7
(x2-7xy-—x)-(3x2+5xy+7x)
6