人教版初二数学上册单项式乘多项式练习题精选19.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19.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19
(-x3)(-6x-3)4a(4a-9b)(6x-2y)(-3x)
71
(—ab2-5ab)•—ab22x(4x-3)-x(4x-2)+x(x-3)
67
(8×103)×(-9×102)(-a4b)(-5a)(3x)2(-2x2y4)
5x4•6x-2y4•(-7x4y)(-4x)3•6x2
(3a)3•(-4a)35a•4a42y2•2y
(-x2)(-5x+9)3a(2a-7b)(2x+8y)(-7x)
71
(—ab2+5ab)•—ab4x(x+3)-x(x+3)-2x(x+4)
67
(5×108)×(-9×102)(-ab4)(-9a)(2x)3(3x2y4)
9x•2x-9y3•(-7x2y)(2x)2•4x3
(2a)2•(4a)3-6a4•4a42y•5y
(-8x4)(-4x-8)-6a(5a-9b)(7x+3y)(-6x)
31
(—ab3-5ab)•—abx(x-2)+4x(x+3)+x(2x+3)
43
(5×105)×(-8×108)(-9a4b2)(-9a3)(2x)2(-3x2y5)
-4x•5x3-5y•(-4x4y)(-3x)3•8x4
(3a)3•(-4a)37a4•3a-2y3•8y4
(-4x3)(2x-2)5a(5a-5b)(9x-6y)(-2x)
31
(—ab2-2ab)•—abx(x+2)+x(4x+3)-4x(4x+2)
43
(4×108)×(-9×103)(-ab2)(-3a2)(-3x)3(3x2y5)
9x3•9x27y•(-4xy2)(-2x)2•7x3
(-4a)2•(-3a)34a•6a3-2y•9y3
(-x2)(8x+3)4a(3a-6b)(8x+8y)(-9x)
21
(—ab3-2ab)•—ab2x(x+4)+x(3x+2)-2x(3x+2)
32
(5×102)×(-8×109)(-5ab)(-5a2)(2x)3(3x3y4)
5x2•5x3-4y•(-9xy4)(-4x)3•7x4
(3a)3•(-2a)34a•8a26y•2y
(-6x3)(2x-2)-3a(9a+4b)(6x+5y)(-2x)
71
(—ab3-4ab)•—ab2x(x-1)-x(4x+3)+x(x+1)
67
(3×109)×(-3×108)(-a2b)(-6a4)(3x)2(4x3y2)
9x4•6x-3y•(-2xy2)(-3x)2•4x3
(3a)3•(-3a)36a•8a4-7y3•9y4
(-7x3)(9x-9)-9a(4a-7b)(6x+5y)(-5x)
41
(—ab3+3ab)•—ab24x(2x+1)-x(2x-1)+x(2x+2)
54
(6×102)×(-8×104)(-9a2b3)(-3a)(-3x)3(2x2y5)
-2x•8x9y•(-9xy)(-4x)3•3x2
(4a)3•(-4a)37a3•6a4y4•9y
(-x3)(7x-2)-9a(6a-7b)(9x-8y)(-2x)
41
(—ab3+6ab)•—ab3x(3x-1)+2x(x+2)+x(x-1)
54
(6×108)×(-5×107)(-ab)(-2a)(-3x)3(2x2y3)
4x•9x3-2y4•(-2x4y)(-3x)3•3x3
(4a)3•(2a)37a4•3a45y2•2y
(-x3)(-2x+4)-7a(7a-9b)(7x-6y)(-8x)
31
(—ab2+6ab)•—abx(4x-1)+2x(3x-2)+x(3x+2)
43
(8×102)×(-2×105)(-6a4b3)(-4a2)(-4x)2(4x2y2)
-6x4•5x4-5y3•(-6xy4)(2x)3•6x4
(-4a)3•(3a)33a4•7a4-4y•5y3
(-5x3)(4x+6)-5a(3a+5b)(7x+7y)(-8x)
41
(—ab3-3ab)•—ab33x(2x-4)+x(x-3)+4x(x+4)
34
(4×106)×(-7×107)(-a4b)(-6a2)(3x)3(-3x3y5)
-8x4•3x34y2•(-7x2y)(-2x)2•9x3
(-3a)3•(-2a)3-6a2•4a2y•9y2
(-8x2)(4x-5)-8a(3a+6b)(6x+4y)(-6x)
41
(—ab2+2ab)•—ab2x(x+3)+4x(x-3)-4x(3x+3)
54
(6×109)×(-6×108)(-a2b3)(-7a2)(2x)2(3x3y5)
9x•6x-5y4•(-5x2y4)(-3x)3•7x2
(4a)3•(3a)3-9a2•5a2-7y•5y2
(-4x2)(3x+2)2a(3a-8b)(7x+9y)(-2x)
41
(—ab3-5ab)•—ab34x(x+2)+x(x-3)-4x(x+3)
34
(9×109)×(-4×105)(-2ab3)(-6a)(-3x)2(2x3y2)
2x2•2x-8y•(-8xy)(-4x)2•6x4
(-3a)2•(2a)22a•4a-6y•2y
(-4x3)(-5x+7)6a(6a-2b)(4x-3y)(-8x)
41
(—ab2+3ab)•—abx(x+1)+x(x-3)-x(3x+4)
54
(5×108)×(-6×107)(-ab3)(-9a2)(3x)3(3x4y4)
7x3•9x5y3•(-7xy)(3x)2•3x3
(4a)2•(-4a)26a•8a3y•7y
(-5x3)(5x-2)-5a(8a+3b)(2x+2y)(-5x)
61
(—ab3+4ab)•—ab3x(2x-4)-4x(2x-2)-x(4x+1)
56
(8×105)×(-2×106)(-ab3)(-7a)(-4x)3(3x3y2)
3x2•8x25y3•(-9xy)(-3x)3•2x2
(3a)2•(-3a)2-9a•4a49y•7y
(-x3)(-5x-4)2a(9a-3b)(3x+9y)(-9x)
51
(—ab3+4ab)•—ab33x(x-1)-4x(2x-1)-x(2x-3)
45
(5×108)×(-5×104)(-a2b2)(-3a)(2x)2(4x3y4)
-6x•6x3-6y•(-9xy2)(-2x)3•5x2
(2a)2•(-4a)25a4•7a44y•2y
(-x2)(-9x-9)-3a(8a+2b)(6x+5y)(-4x)
51
(—ab2-2ab)•—abx(x-4)-3x(4x-4)-x(x+2)
65
(5×109)×(-5×108)(-ab3)(-4a2)(2x)2(4x4y3)
-4x2•4x-5y3•(-5x4y4)(-3x)3•8x4
(-2a)3•(-3a)35a•7a44y2•5y4
(-7x2)(5x-6)-6a(5a-4b)(5x-6y)(-8x)
21
(—ab3+6ab)•—ab34x(4x+4)-3x(x-1)-3x(3x-3)
32
(4×109)×(-4×102)(-5a3b2)(-6a)(-4x)3(-3x3y5)
-4x2•2x5y•(-6xy)(3x)2•3x4
(-2a)2•(2a)3-6a•7a7y•5y
(-x4)(8x-1)-4a(4a-2b)(5x-5y)(-2x)
31
(—ab2-5ab)•—ab32x(x+4)+3x(x-3)+x(x+2)
43
(3×102)×(-8×102)(-3a3b)(-6a)(2x)2(-2x4y2)
7x•3x44y4•(-7xy4)(-2x)3•7x2
(3a)2•(2a)3-2a4•5a-6y•9y
(-x4)(9x-9)-9a(6a-5b)(9x+4y)(-6x)
71
(—ab3-6ab)•—ab3x(x+4)+x(2x+3)-x(4x+4)
67
(3×103)×(-6×105)(-a3b)(-9a)(-2x)2(-3x3y4)
2x•2x4-9y•(-5x3y)(-3x)2•9x4
(-2a)3•(-4a)34a•2a4-4y•4y
(-x4)(4x+8)7a(5a-7b)(2x-4y)(-7x)
41
(—ab3-2ab)•—abx(4x+2)-4x(x-4)+4x(x+4)
54
(9×107)×(-3×109)(-6ab)(-7a4)(-4x)2(-3x2y5)
-9x•3x38y3•(-2x2y)(-2x)3•5x2
(3a)2•(-4a)27a•7a4-4y4•5y
(-x4)(8x+7)-9a(2a-6b)(2x-3y)(-3x)
41
(—ab3+5ab)•—ab2x(x-1)+2x(x+1)-2x(x-3)
54
(5×102)×(-8×106)(-8ab)(-2a)(4x)2(4x3y3)
-2x•8x44y2•(-2xy)(-2x)3•9x3
(3a)2•(-4a)34a•4a49y•9y
(-5x2)(8x-9)6a(2a+2b)(9x+3y)(-4x)
41
(—ab3+4ab)•—abx(2x-4)-2x(x+4)-4x(4x-2)
54
(4×105)×(-8×107)(-a2b)(-9a2)(-4x)2(-2x4y4)
-2x3•3x9y2•(-4xy4)(-2x)3•5x3
(4a)3•(2a)2-9a4•4a2-3y4•3y
(-3x2)(-9x+1)-4a(7a-8b)(5x+9y)(-2x)
41
(—ab2+4ab)•—ab32x(4x-2)+x(4x+1)-3x(x-1)
34
(9×106)×(-3×108)(-3a2b4)(-7a)(-4x)3(-2x3y5)
-7x•9x4-9y2•(-6xy3)(2x)2•2x2
(-2a)3•(2a)2-7a•3a3-2y•7y3
(-5x3)(6x+9)6a(8a-8b)(8x+8y)(-2x)
51
(—ab3+3ab)•—ab24x(3x-3)+3x(2x+3)-2x(2x+2)
65
(6×102)×(-9×108)(-ab4)(-2a)(3x)3(-3x2y4)
-9x4•2x-8y2•(-4x2y)(-3x)3•9x4
(-4a)2•(-4a)28a2•2a4y•9y
(-x2)(2x+1)3a(7a+3b)(2x-5y)(-3x)
51
(—ab3-5ab)•—abx(4x+4)-x(x-2)-x(2x-2)
45
(6×104)×(-6×102)(-8a3b3)(-2a2)(-4x)2(-3x3y4)
3x•5x-5y•(-3x3y2)(-4x)2•8x3
(4a)3•(3a)3-2a•8a5y•3y
(-8x2)(6x+4)-9a(4a+6b)(7x-7y)(-9x)
41
(—ab2-6ab)•—ab34x(3x+2)+x(3x+1)+3x(x+4)
34
(5×108)×(-5×103)(-4a4b)(-9a)(3x)2(-3x3y5)
-5x•7x7y•(-9x3y2)(-4x)2•3x2
(-2a)3•(-3a)27a2•9a3-6y4•6y2
(-3x4)(-9x-7)9a(4a-4b)(4x+9y)(-9x)
31
(—ab3-3ab)•—abx(x+2)+2x(2x-3)+x(x+3)
43
(6×109)×(-2×103)(-6a3b2)(-2a)(4x)2(4x2y4)
-9x3•7x2y•(-6x4y)(-2x)3•5x2
(-4a)2•(4a)22a2•6a-7y•9y4
(-x4)(-2x+2)9a(9a-4b)(7x-2y)(-2x)
41
(—ab3-6ab)•—ab3x(x-3)-x(x-2)+2x(2x-4)
34
(9×105)×(-7×104)(-ab)(-4a)(4x)2(3x2y2)
-8x4•5x7y3•(-2xy)(2x)3•9x2
(-3a)3•(4a)3-3a•7a2-2y•8y4
(-x4)(-8x-6)-7a(6a-9b)(5x+8y)(-8x)
41
(—ab3-6ab)•—ab3x(x+4)-4x(x+3)+x(4x-2
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