人教版初二数学上册单项式乘多项式练习题精选22.docx

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人教版初二数学上册单项式乘多项式练习题精选22.docx

人教版初二数学上册单项式乘多项式练习题精选22

(-5x3)(8x-4)6a(8a+7b)(2x+8y)(-8x)

21

(—ab2-2ab)•—abx(2x-1)-x(4x+3)-3x(x+4)

32

(2×108)×(-4×106)(-ab)(-9a2)(4x)3(-2x4y5)

4x•6x-5y•(-6x3y4)(2x)2•8x3

(-4a)3•(-4a)27a•9a47y2•8y3

(-6x4)(-3x-2)3a(7a-6b)(6x+4y)(-3x)

61

(—ab2-6ab)•—ab4x(2x+2)+2x(x-1)+x(x+2)

56

(7×102)×(-6×108)(-7ab4)(-3a)(-3x)2(-3x3y4)

-7x4•7x-3y•(-5xy4)(3x)2•4x2

(-2a)3•(2a)39a•2a48y•5y

(-x2)(3x+9)-2a(6a+2b)(8x-4y)(-8x)

31

(—ab2-4ab)•—ab33x(3x+4)-x(4x+4)-x(3x-3)

43

(6×104)×(-3×106)(-ab)(-2a4)(-4x)3(-3x4y3)

-7x•2x2-5y•(-7xy2)(2x)3•8x2

(-2a)2•(-2a)36a•2a4-3y4•3y

(-4x4)(-7x-1)8a(3a+5b)(2x-3y)(-4x)

61

(—ab2+3ab)•—ab3x(x-2)-3x(x-4)-x(3x+1)

56

(6×105)×(-7×108)(-ab2)(-4a)(-4x)3(4x3y5)

-6x•4x3y2•(-4x2y)(-2x)2•6x2

(3a)3•(2a)33a2•9a-8y•5y

(-x3)(7x-9)-8a(8a-8b)(7x-4y)(-4x)

31

(—ab2-2ab)•—ab33x(x+3)+4x(2x+3)-x(3x+4)

43

(3×103)×(-2×104)(-2ab4)(-7a)(4x)3(2x2y5)

-5x4•4x2-8y2•(-7x4y)(2x)3•3x2

(-4a)2•(-4a)38a•4a22y2•2y3

(-9x2)(-3x+1)-7a(6a+5b)(6x+4y)(-5x)

51

(—ab2+6ab)•—ab4x(x-4)+3x(x+1)-3x(x-1)

45

(8×109)×(-5×108)(-9a4b2)(-4a3)(2x)2(-2x4y5)

2x•6x2-4y2•(-8x4y)(2x)2•9x3

(2a)3•(4a)36a4•8a9y2•7y3

(-4x2)(-9x+3)-6a(7a-5b)(6x+3y)(-8x)

41

(—ab3-6ab)•—ab3x(x+2)-2x(2x-4)-4x(x-3)

34

(3×102)×(-6×106)(-3a2b2)(-3a)(-4x)2(-4x3y4)

-3x•9x-6y2•(-3xy4)(-3x)2•9x2

(-2a)3•(3a)2-3a4•8a-8y3•5y

(-x3)(-2x+5)-2a(9a+2b)(7x+6y)(-2x)

21

(—ab2-6ab)•—ab3x(x-1)-x(x+4)-4x(x-3)

32

(8×107)×(-2×102)(-5ab)(-7a)(-4x)2(4x2y3)

-7x•6x4y•(-5x2y4)(-4x)2•3x2

(-4a)2•(3a)22a3•6a23y2•8y4

(-x4)(-9x-2)-4a(3a+9b)(9x-9y)(-5x)

41

(—ab3+3ab)•—ab23x(4x+4)-x(4x-3)+x(2x-2)

54

(9×103)×(-7×105)(-8a3b)(-3a2)(4x)3(-4x3y5)

8x•2x4-5y•(-5xy3)(3x)3•7x3

(-4a)3•(-2a)3-8a4•6a-5y•4y4

(-x2)(5x-7)-3a(2a+3b)(7x+3y)(-2x)

41

(—ab2-3ab)•—ab2x(x-3)+x(x-1)+4x(3x+2)

34

(7×104)×(-5×107)(-5ab)(-7a)(4x)2(3x3y4)

-4x3•4x-6y•(-8xy)(-4x)3•9x3

(-3a)3•(-2a)23a3•8a3y4•8y4

(-8x3)(3x+1)8a(6a+4b)(8x+4y)(-5x)

31

(—ab3+5ab)•—ab2x(3x-4)-x(2x+3)-2x(4x-3)

43

(3×104)×(-9×103)(-9a3b2)(-4a2)(-4x)3(-3x4y5)

-4x•2x-8y4•(-2x3y)(-2x)2•9x4

(2a)3•(-3a)23a•2a-3y•3y

(-9x2)(4x+5)8a(8a+6b)(8x+7y)(-6x)

61

(—ab3-5ab)•—ab33x(4x+4)+x(x-1)-x(4x+4)

56

(5×105)×(-3×102)(-a2b)(-2a2)(4x)2(-4x2y5)

3x4•5x2-4y3•(-3x3y)(2x)2•5x2

(4a)3•(3a)3-2a•8a48y•4y

(-x4)(8x+3)-8a(4a-9b)(4x+5y)(-6x)

51

(—ab3+5ab)•—ab3x(4x-3)-x(4x-2)-x(x-2)

45

(7×108)×(-3×102)(-6a2b)(-3a)(-2x)3(4x3y4)

-5x•2x3-8y3•(-5xy)(2x)2•2x3

(-4a)2•(3a)38a•9a4-9y2•9y

(-3x2)(4x-5)5a(5a-5b)(7x-6y)(-3x)

41

(—ab2-2ab)•—ab2x(x+3)+x(x-3)-2x(x-4)

34

(3×104)×(-8×105)(-a2b)(-8a)(-2x)3(3x2y3)

-8x•2x-9y2•(-8x4y3)(-3x)3•4x4

(2a)3•(-4a)38a•6a-3y•9y3

(-7x2)(4x+7)-5a(4a-7b)(7x+6y)(-4x)

41

(—ab2+5ab)•—ab23x(2x-2)+x(4x+2)-2x(2x+1)

34

(3×102)×(-3×103)(-ab2)(-3a4)(3x)3(2x3y2)

5x•8x2y•(-4x3y3)(4x)3•3x4

(2a)3•(-3a)2-3a3•7a33y4•7y3

(-x3)(-6x-1)-9a(3a-9b)(5x+9y)(-5x)

21

(—ab2-3ab)•—ab22x(2x+2)-4x(x-4)-2x(3x+1)

32

(9×102)×(-7×103)(-9a3b)(-3a)(4x)3(-4x2y3)

-5x•8x-2y4•(-8x2y)(4x)3•9x3

(2a)3•(3a)29a3•5a-6y3•9y

(-3x3)(-4x-5)-7a(5a-7b)(4x+6y)(-3x)

51

(—ab3-3ab)•—ab33x(x-1)+x(4x+4)+3x(x+2)

65

(7×109)×(-8×103)(-ab)(-8a3)(-4x)3(-4x2y5)

-4x•5x4-5y•(-8x4y2)(-4x)2•5x4

(3a)2•(4a)2-5a•5a3y•6y

(-7x2)(-8x+6)-5a(2a-8b)(7x+2y)(-6x)

71

(—ab3+2ab)•—ab3x(x-4)-x(4x+2)-4x(4x-2)

67

(9×109)×(-6×105)(-a2b3)(-9a)(3x)3(-2x2y2)

-3x3•6x2-5y•(-2x4y)(3x)3•2x3

(4a)2•(4a)2-6a4•5a26y4•3y

(-x3)(-7x-1)-4a(4a-7b)(8x+3y)(-3x)

51

(—ab3+5ab)•—ab32x(x-1)+2x(x-3)+x(3x+4)

45

(9×105)×(-3×106)(-a2b)(-6a2)(-3x)3(-2x4y4)

5x4•5x9y•(-4x3y3)(-4x)2•9x3

(3a)3•(2a)2-9a2•4a-2y2•2y4

(-3x2)(3x-1)-2a(2a+9b)(7x+2y)(-8x)

21

(—ab2+4ab)•—abx(2x+2)-4x(x+4)+3x(x-3)

32

(7×104)×(-9×102)(-a3b3)(-7a2)(2x)3(-3x4y2)

2x2•4x32y•(-4xy2)(-3x)2•2x4

(-4a)2•(3a)38a2•4a2-2y•3y

(-3x4)(-7x-4)8a(4a+3b)(5x+2y)(-2x)

41

(—ab2+2ab)•—ab3x(x-4)-x(x+3)+x(x+1)

54

(2×109)×(-6×106)(-a4b)(-8a4)(3x)2(-4x3y4)

4x2•8x47y•(-5xy2)(4x)2•7x3

(-2a)2•(4a)39a•9a-6y•5y

(-6x3)(5x+3)-9a(6a+9b)(6x-7y)(-8x)

71

(—ab3-4ab)•—ab3x(3x-3)-4x(x-4)+x(4x-2)

67

(6×109)×(-8×108)(-a4b)(-4a3)(-2x)3(3x2y4)

5x3•3x4-8y•(-5x4y)(2x)3•3x2

(4a)3•(-3a)3-3a•3a2y•6y2

(-2x3)(8x+6)3a(9a-9b)(2x-5y)(-6x)

41

(—ab2-4ab)•—abx(x+2)-x(x+3)+x(x+1)

54

(6×106)×(-5×108)(-4ab)(-3a)(-4x)3(4x2y2)

-2x•7x4y4•(-7x3y4)(-4x)2•5x3

(-3a)3•(2a)35a4•9a-2y•3y4

(-x3)(-3x-8)7a(4a-9b)(3x-4y)(-5x)

51

(—ab2+2ab)•—ab2x(x+2)+x(2x-4)+x(x+3)

45

(3×103)×(-2×103)(-a4b)(-4a4)(4x)2(4x2y3)

9x•7x4y3•(-3x4y3)(4x)3•8x2

(2a)2•(3a)38a4•9a5y3•2y

(-3x3)(-5x-3)6a(9a-3b)(7x-8y)(-7x)

71

(—ab2+4ab)•—abx(4x-3)-x(x-1)+2x(x-4)

67

(4×105)×(-5×102)(-ab2)(-9a)(3x)3(4x2y3)

-6x2•7x-3y4•(-7xy4)(-3x)3•8x4

(4a)3•(-2a)25a2•4a46y2•7y

(-x4)(-3x+4)-3a(4a+5b)(7x-5y)(-7x)

51

(—ab2-2ab)•—ab24x(2x+4)-4x(2x+2)+4x(2x-4)

65

(6×109)×(-4×108)(-a2b)(-9a)(2x)2(-2x4y5)

-4x2•3x-6y3•(-9xy)(-4x)3•5x3

(4a)2•(4a)3-8a4•5a5y•8y4

(-x2)(-7x+5)2a(3a-8b)(8x+8y)(-3x)

51

(—ab2-5ab)•—ab24x(2x+2)-x(2x-1)-x(x-1)

65

(8×106)×(-9×107)(-3ab2)(-3a4)(2x)3(-3x3y3)

-7x2•4x43y•(-4xy)(-2x)3•7x4

(2a)2•(-3a)28a2•9a32y•8y2

(-x3)(8x-5)7a(3a-7b)(3x-5y)(-8x)

51

(—ab3+4ab)•—ab23x(x-3)-2x(x+1)-4x(2x+3)

65

(5×106)×(-6×108)(-a3b)(-9a)(4x)2(-3x3y5)

5x•5x-5y3•(-6x4y)(3x)3•2x3

(-3a)2•(-3a)3-8a•4a2-7y2•8y3

(-x2)(6x+4)3a(7a-7b)(8x+4y)(-7x)

41

(—ab2+3ab)•—ab3x(2x-3)+x(x

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