七年级数学下册计算题6Word下载.docx

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七年级数学下册计算题6Word下载.docx

2x2-(6x2+x-3)-(9x-4)

7y2-(5x2-y)+(9x2+9y2)

8

(5x2-2xy+—x)-(3x2-8xy-3x)

7

41

(—xy-2y2-3)+(x2+—xy+6y2+1)

54

(xy-—y-—)+(xy+x+5)

64

(6y+2x-z2)+(7y-6x+7z2)

(k2+5k)+(5k2-7k-9)

(9a2+7a-2b)+(7a2-7a-8b)

6x2-(2x2+7x+4)+(6x-1)

7y2+(x2+y)-(4x2-y2)

(3x2-2xy+—x)-(8x2+8xy-6x)

3

47

(—xy-7y2-9)+(x2+—xy+7y2-2)

38

21

(xy+—y-—)+(xy+x+9)

33

(y+6x-2z2)-(8y-x+5z2)

(6k2+2k)-(4k2-6k+4)

(8a2+2a+9b)+(6a2+8a+2b)

6x2-(3x2+3x-4)+(4x-6)

y2+(5x2-y)-(6x2-4y2)

9

(4x2-7xy-—x)+(2x2+5xy+9x)

(—xy-y2-3)+(x2+—xy+7y2+6)

55

(xy+—y-—)-(xy-x-3)

53

(8y-9x-6z2)+(9y-4x+7z2)

(8k2-2k)-(7k2-5k-8)

(5a2-5a+9b)+(9a2-9a+9b)

x2-(5x2+2x+7)-(6x+8)

3y2-(5x2+y)-(3x2+7y2)

1

(4x2+2xy-—x)-(8x2+xy-7x)

71

(—xy-5y2+6)+(x2+—xy-2y2-3)

88

56

(xy+—y-—)+(xy-x+5)

67

(3y-6x+6z2)-(3y+5x+9z2)

(2k2-8k)-(k2-3k-4)

(3a2+2a+3b)+(8a2-8a+3b)

x2+(6x2-6x+9)+(2x+3)

7y2-(3x2+y)-(x2+y2)

(7x2+7xy-—x)+(x2+5xy+8x)

11

(—xy+5y2+6)+(x2-—xy+8y2-3)

53

71

(xy+—y+—)-(xy-x-4)

(8y+5x-9z2)+(9y-9x-3z2)

(8k2+3k)+(5k2-6k+1)

(5a2-7a+5b)-(8a2-9a+4b)

5x2-(6x2-x-9)-(8x-8)

3y2+(2x2-y)-(6x2+y2)

(9x2+6xy+—x)-(7x2+8xy+2x)

15

(—xy-7y2+6)-(x2-—xy-7y2+1)

44

46

(xy-—y+—)+(xy-x-8)

35

(8y-8x+7z2)+(2y+3x+z2)

(3k2-k)-(k2+8k+2)

(7a2+8a-7b)-(4a2-5a+4b)

6x2-(7x2+7x-7)-(4x+1)

8y2-(2x2+y)-(8x2+9y2)

(2x2-5xy+—x)-(5x2+xy-5x)

46

(—xy+y2+5)+(x2+—xy+9y2-4)

14

(xy-—y+—)+(xy+x+3)

73

(5y+2x-2z2)-(4y-6x+5z2)

(9k2-2k)-(5k2-5k+3)

(9a2-7a-3b)-(4a2+8a-8b)

6x2+(6x2-x+9)-(5x+4)

y2+(4x2-y)-(6x2-4y2)

6

(4x2-6xy-—x)-(7x2+6xy+7x)

(—xy+9y2-4)+(x2-—xy-4y2+2)

13

(xy-—y+—)+(xy-x-4)

54

(7y-2x-z2)-(7y+3x-8z2)

(4k2-6k)-(8k2-9k+5)

(6a2+9a+2b)-(2a2+6a-3b)

8x2-(5x2+5x+6)-(2x-2)

8y2-(7x2-y)-(4x2+4y2)

(3x2-8xy-—x)+(5x2+2xy-6x)

75

(—xy-7y2+1)+(x2+—xy+7y2-4)

64

(xy-—y+—)+(xy+x-4)

65

(6y+x-8z2)-(y+7x+4z2)

(7k2+6k)-(2k2-7k-3)

(5a2-9a+3b)+(6a2-2a-b)

8x2+(8x2+x-1)+(x-1)

9y2-(5x2-y)+(6x2+9y2)

(8x2-6xy+—x)+(x2+8xy+7x)

69

(—xy-3y2+1)+(x2-—xy-y2+3)

58

43

(xy-—y-—)-(xy-x+5)

(9y+4x+z2)+(y+x-2z2)

(3k2+8k)-(6k2-7k-8)

(5a2+3a-b)-(8a2-a-3b)

5x2-(3x2+5x-7)+(5x-7)

3y2-(x2+y)-(4x2+8y2)

(9x2+6xy-—x)-(x2-2xy+9x)

(—xy+6y2+7)+(x2+—xy-3y2+2)

85

51

(xy+—y+—)+(xy-x+4)

(4y+6x+9z2)-(8y+5x+4z2)

(8k2+2k)-(2k2+8k+7)

(3a2+7a+4b)-(4a2-7a+6b)

7x2-(2x2+x-6)-(9x-5)

2y2+(x2+y)+(5x2-y2)

2

(6x2+6xy+—x)+(8x2+3xy-8x)

65

(—xy-4y2-1)+(x2-—xy+5y2+1)

(xy-—y+—)+(xy+x+6)

88

(9y-4x+8z2)-(2y-6x-7z2)

(7k2-2k)-(2k2-k-7)

(8a2+3a-4b)+(3a2-a-8b)

9x2-(9x2+3x+7)+(x+3)

y2+(4x2-y)+(3x2-y2)

(5x2-3xy-—x)-(4x2-8xy-9x)

31

(—xy-5y2-3)-(x2-—xy-7y2+2)

(xy+—y+—)+(xy+x+7)

(3y-9x+6z2)-(9y-8x+4z2)

(k2-k)-(3k2-4k-8)

(4a2-3a+2b)+(3a2+6a+b)

6x2-(x2+x+3)-(3x-7)

8y2+(9x2-y)+(3x2+y2)

(6x2-6xy-—x)-(2x2-8xy-4x)

17

(—xy-9y2+9)+(x2+—xy+5y2-4)

16

(xy-—y-—)+(xy+x+1)

(9y-4x+4z2)-(5y+3x+z2)

(5k2-8k)-(8k2-3k-5)

(a2-3a-b)-(6a2+2a+4b)

7x2+(7x2-6x+8)+(x-4)

3y2+(6x2-y)-(7x2-8y2)

(6x2-6xy-—x)-(8x2-6xy+3x)

(—xy+8y2+1)-(x2-—xy+4y2-6)

76

(x

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