七年级数学下册计算题15.docx

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七年级数学下册计算题15.docx

七年级数学下册计算题15

(2k2-6k)-(2k2-8k+5)

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

9x2-(8x2+8x-5)+(9x-3)

7y2-(9x2+y)+(2x2+2y2)

7

(2x2-2xy-—x)+(7x2-xy-x)

8

61

(—xy-7y2+2)-(x2+—xy+5y2-7)

57

25

(xy+—y-—)+(xy+x+8)

36

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

(4k2+9k)+(4k2+4k+2)

(7a2+5a+9b)-(3a2+a+8b)

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

9y2+(4x2-y)+(8x2+7y2)

1

(9x2+4xy-—x)-(4x2-4xy+4x)

3

39

(—xy-y2-7)+(x2-—xy-3y2+4)

48

41

(xy+—y+—)+(xy-x+7)

37

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

(3k2-9k)+(5k2-6k+2)

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

4x2-(8x2-x+9)+(8x+4)

3y2-(2x2-y)+(8x2+9y2)

9

(9x2+8xy-—x)-(3x2-xy+6x)

8

11

(—xy-7y2-1)+(x2+—xy-2y2-4)

77

75

(xy-—y-—)+(xy+x-3)

86

(5y-4x-4z2)+(2y-7x-2z2)

(3k2-4k)-(3k2+4k+4)

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

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

6y2+(2x2+y)+(7x2-5y2)

3

(5x2-7xy-—x)+(7x2-6xy-3x)

4

11

(—xy-7y2+5)+(x2+—xy-8y2-5)

43

41

(xy+—y-—)+(xy-x+5)

38

(5y+6x-9z2)-(9y-2x-5z2)

(4k2-7k)-(6k2-9k-2)

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

x2+(9x2-7x-3)-(3x+5)

2y2+(2x2-y)+(8x2-5y2)

7

(4x2-xy-—x)-(8x2+9xy-x)

6

15

(—xy+3y2+5)+(x2-—xy+9y2+5)

66

61

(xy+—y+—)+(xy+x-2)

77

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

(6k2+4k)-(2k2+k+5)

(4a2-5a-7b)-(2a2-9a-8b)

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

4y2+(6x2-y)-(3x2-8y2)

1

(4x2+5xy-—x)+(2x2-8xy+3x)

3

71

(—xy+7y2-6)-(x2+—xy-3y2+2)

68

34

(xy-—y-—)+(xy-x+4)

45

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

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

(5a2+7a+3b)-(9a2+2a+2b)

4x2-(6x2-4x+3)+(5x-5)

4y2-(4x2+y)-(9x2+4y2)

1

(4x2-6xy-—x)+(2x2-6xy+2x)

5

34

(—xy+8y2+1)+(x2-—xy+2y2-5)

45

36

(xy+—y-—)-(xy-x-4)

45

(3y-6x-9z2)+(8y+2x+4z2)

(7k2-8k)+(3k2-9k+4)

(9a2-2a+3b)+(a2-9a-4b)

5x2-(5x2+3x-9)-(9x-2)

3y2+(9x2-y)-(4x2-y2)

7

(5x2+3xy-—x)-(4x2-4xy+2x)

8

56

(—xy-7y2+7)+(x2-—xy-y2+8)

47

77

(xy-—y+—)+(xy-x-1)

88

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

(3k2-5k)-(6k2+9k-6)

(6a2+7a-8b)+(a2+4a-b)

3x2+(5x2-4x+3)-(4x-1)

2y2-(8x2+y)+(9x2+6y2)

6

(x2-4xy-—x)-(8x2+4xy-6x)

5

11

(—xy-9y2-3)-(x2+—xy+5y2+7)

63

11

(xy+—y-—)+(xy-x+1)

44

(9y+7x-z2)+(y+4x+3z2)

(3k2-3k)-(5k2+4k+1)

(7a2+8a+3b)+(3a2+a-6b)

x2+(3x2-5x-4)+(4x+6)

2y2+(x2-y)+(7x2-3y2)

4

(5x2+xy-—x)-(9x2-3xy+7x)

5

47

(—xy-y2+1)+(x2+—xy-7y2-3)

38

96

(xy-—y+—)+(xy-x+8)

85

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

(6k2+8k)+(2k2-5k+4)

(4a2+8a-5b)-(6a2+a+3b)

x2-(6x2-8x-9)-(2x+7)

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

3

(6x2-3xy+—x)-(x2+2xy+x)

4

14

(—xy-5y2+1)-(x2+—xy+7y2+5)

55

27

(xy+—y+—)-(xy-x+6)

38

(4y+3x+9z2)-(y+7x-4z2)

(9k2+9k)-(5k2-3k-8)

(4a2-6a+3b)-(9a2-7a+2b)

7x2-(2x2-2x+4)-(x+3)

5y2-(9x2+y)+(8x2-8y2)

1

(8x2-2xy+—x)-(3x2-8xy+7x)

3

96

(—xy-7y2+2)+(x2-—xy+9y2+5)

85

58

(xy-—y+—)+(xy+x-5)

67

(3y-5x+4z2)-(3y-8x-2z2)

(3k2+5k)+(9k2-3k-1)

(6a2+5a-7b)+(5a2-5a+5b)

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

9y2-(7x2+y)-(4x2-3y2)

1

(7x2-8xy+—x)+(3x2+6xy+7x)

7

31

(—xy+4y2-4)+(x2-—xy+y2+1)

47

11

(xy+—y+—)+(xy+x+6)

37

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

(5k2+3k)-(7k2+4k-6)

(8a2+7a+6b)-(2a2-3a+9b)

2x2-(7x2+2x+4)-(x+5)

3y2+(2x2+y)-(2x2-8y2)

6

(5x2+3xy-—x)+(4x2+xy-5x)

7

11

(—xy-5y2+9)+(x2-—xy+8y2-3)

74

76

(xy+—y+—)+(xy+x-3)

67

(4y-5x-4z2)-(5y-8x+2z2)

(2k2+9k)-(8k2-7k+8)

(6a2+8a-b)+(7a2-8a-4b)

8x2-(9x2+9x+1)+(7x-6)

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

6

(x2+7xy+—x)-(5x2+3xy-4x)

5

69

(—xy+6y2+3)-(x2+—xy-3y2-3)

78

11

(xy-—y-—)+(xy+x-9)

74

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

(4k2-8k)+(8k2+6k+3)

(a2+9a+5b)+(7a2+2a+4b)

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

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

1

(8x2+4xy-—x)-(4x2-2xy-x)

8

61

(—xy-2y2-1)-(x2-—xy+9y2-3)

57

53

(xy+—y+—)-(xy+x-9)

44

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

(5k2-2k)+(4k2-5k-9)

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

3x2-(3x2-8x+7)+(4x-3)

6y2+(3x2-y)-(9x2+3y2)

6

(x2-4xy-—x)+(6x2-6xy+6x)

5

18

(—xy+3y2+1)-(x2+—xy+3y2-2)

67

35

(xy-—y-—)+(xy+x+7)

44

(7y+7x-4z2)+(3y+7x+9z2)

(4k2+5k)-(3k2-8k-3)

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

9x2-(2x2-x-7)+(4x-6)

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

1

(7x2+xy-—x)+(5x2+5xy+2x)

8

11

(—xy+y2-2)+(x2+—xy+3y2+8)

54

91

(xy-—y+—)+(xy-x-6)

84

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

(4k2-6k)+(3k2-8k+7)

(3a2-5a+8b)-(4a2-7a-8b)

2x2+(7x2-7x+1)-(7x+3)

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

7

(4x2+8xy-—x)+(3x2+4xy+x)

6

85

(—xy-7y2+2)+(x2+—xy-7y2-9)

74

78

(xy-—y+—)-(xy-x+1)

67

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

(5k2+2k)+(k2-6k+9)

(3a2-5a-4b)+(a2+2a-b)

4x2+(7x2-6x+1)-(4x-5)

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

4

(2x2-5xy-—x)-(x2-9xy-3x)

5

66

(—xy+6y2+2)-(x2+—xy-8y2-1)

57

16

(xy-—y-—)-(xy-x+6)

77

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

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

(a2+8a-3b)-(8a2+7a+6b)

9x2-(5x2-3x-1)-(3x+6)

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

1

(2x2+7xy-—x)+(4x2+xy-8x)

6

11

(—xy-2y2+7)-(x2-—xy-8y2-4)

47

14

(xy+—y+—)-(xy-x-3)

53

(8y+5x+2z2)+(4y+2x+4z2)

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

(6a2-7a+4b)-(6a2+2a-5b)

5x2-(5x2+8x-7)-(9x-6)

4y2+(2x2-y)-(2x2+3y2)

8

(4x2+2xy+—x)-(2x2+7xy+x)

7

37

(—xy-7y2+6)+(x2+—xy+9y2+9)

46

17

(xy-—y-—)-(xy-x-7)

76

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

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

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

2x2-(8x2-8x-8)+(4x+3)

6y2-(3x2-y)+(5x2-y2)

1

(7x2+7xy-—x)+(2x2+3xy-7x)

3

62

(—xy+9y2+1)+(x2+—xy-4y2-6)

73

44

(xy-—y-—)-(xy+x-5)

35

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

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

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

9x2+(8x2-2x-3)-(3x+6)

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

3

(4x2+4xy-—x)+(4x2+8xy+4x)

4

76

(—xy+6y2-2)+(x2+—xy-6y2-6)

67

71

(xy-—y-—)-(xy-x+9)

68

(2y+4x+2z2)-(3y+5x-5z2)

(9k2+5k)+(9k2+4k+1)

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

4x2-(6x2-5x-7)+(6x-5)

6y2+(5x2+y)-(9x2-2y2)

3

(5x2+3xy-—x)-(7x2-4xy-x)

4

61

(—xy+3y2+1)-(x2-—xy-5y2-7)

53

81

(xy+—y+—)+(xy+x+5)

75

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

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