七年级数学下册整式的加减法计算题 42Word下载.docx
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-(x2y+5xy-2)+3(x2y-6xy-7)
51
(—x2-16x-17y)+(—x2+15x-11y)
44
11
-—(3k3-8k2+8)-—(4k3-3k2+2k)
25
(6m2+6m-4)+(m-9n+9)
(8x2-9x-5)-4(x2-x)
-7(x2+3)-2(x2+9)
-(x2y-6xy+6)+4(x2y-6xy+4)
(—x2+16x+20y)+(—x2-10x-18y)
-—(6k3+k2+8)+—(2k3+6k2+6k)
(9m2-3m-4)+(3m+5n+7)
(x2-9x+6)-4(9x2+8x)
-2(x2+5)-6(x2+5)
-(x2y+7xy+4)+9(x2y+7xy+3)
91
(—x2-12x-15y)+(—x2-15x-21y)
88
-—(9k3+3k2-3)-—(4k3-4k2+7k)
(6m2+4m-7)+(m-5n+5)
(4x2+7x-5)+2(5x2-7x)
-8(x2-1)-9(x2+4)
-(x2y-6xy-2)+3(x2y-8xy-6)
(—x2-17x+16y)+(—x2-19x-13y)
33
-—(k3+6k2+8)-—(7k3-8k2+1k)
45
(6m2+8m+3)-(m-n+6)
(x2+7x-4)+7(2x2+4x)
-8(x2+8)+5(x2-2)
-(x2y+2xy+6)+2(x2y-5xy-7)
15
(—x2+13x+18y)-(—x2-13x+30y)
-—(5k3+4k2+6)+—(5k3+8k2-6k)
42
(7m2-m-8)-(4m+7n-9)
(6x2-7x+7)-7(3x2+5x)
-5(x2+9)+2(x2-8)
-(x2y-9xy+2)-4(x2y-2xy-8)
22
(—x2+26x-12y)-(—x2-10x+21y)
-—(9k3-5k2+6)+—(6k3-4k2-8k)
(m2-3m-6)-(7m-7n-9)
(7x2+2x+1)-8(4x2-8x)
-6(x2-7)+5(x2-9)
-(x2y+7xy-3)-5(x2y+9xy-8)
55
(—x2+14x+15y)-(—x2+12x+14y)
-—(k3-4k2-9)+—(3k3+k2-4k)
46
(4m2+4m-4)-(6m+8n+2)
(x2-3x-2)-8(5x2+2x)
-8(x2+2)+6(x2+2)