七年级数学整式的加减法计算题大全 574.docx
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七年级数学整式的加减法计算题大全574
(8k2-5k)-(7k2+k+1)
(6a2-6a-4b)+(3a2-4a+6b)
2x2-(5x2+9x-1)+(2x+2)
2y2+(8x2+y)+(8x2-9y2)
1
(7x2-3xy-—x)+(9x2+9xy+5x)
6
11
(—xy-4y2+1)+(x2+—xy+4y2+9)
66
19
(xy-—y-—)+(xy-x-9)
88
(5y+x-7z2)-(y+6x+7z2)
(6m2-7m-9)-(8m+7n+1)
(3x2+x+6)-9(3x2-5x)
-4(x2+5)+5(x2+1)
-(x2y+5xy+2)-4(x2y-5xy-5)
11
(—x2-27x+20y)-(—x2-17x+13y)
44
11
-—(6k3+9k2-2)-—(9k3-k2+4k)
42
(4k2-2k)+(2k2+7k+2)
(a2-9a-8b)-(a2-7a-9b)
3x2-(8x2+x+7)+(8x-1)
4y2+(9x2+y)+(5x2+3y2)
5
(x2-9xy+—x)+(8x2+4xy+x)
6
58
(—xy-4y2-5)-(x2-—xy-7y2-2)
47
86
(xy-—y+—)+(xy-x+9)
77
(3y-8x-5z2)-(3y+4x-6z2)
(7m2-8m+5)-(8m+n-8)
(8x2-3x+7)+5(9x2+3x)
-6(x2-9)-8(x2-6)
-(x2y-6xy+7)+7(x2y-2xy-5)
75
(—x2-17x+11y)-(—x2-20x-21y)
66
11
-—(2k3-4k2-8)-—(6k3+2k2+4k)
24
(k2+6k)+(8k2-3k+3)
(2a2-4a-4b)-(4a2+8a+7b)
8x2-(3x2+6x-7)+(2x+5)
3y2+(2x2-y)-(4x2+8y2)
1
(3x2+4xy-—x)-(5x2+8xy-2x)
6
17
(—xy-3y2+2)-(x2+—xy-4y2+8)
86
49
(xy-—y+—)+(xy+x+7)
38
(5y+4x-5z2)-(y-9x+9z2)
(8m2+6m+6)-(8m+4n+2)
(3x2-x+5)+6(9x2+2x)
-4(x2-4)+5(x2+6)
-(x2y+8xy-3)-2(x2y-6xy-9)
91
(—x2+11x+15y)-(—x2+13x+11y)
88
11
-—(2k3+7k2-4)+—(7k3+3k2+2k)
65
(4k2-3k)-(7k2+6k+9)
(3a2-4a-9b)+(6a2-5a-5b)
9x2-(3x2-4x+2)+(2x-4)