人教版初二数学上册单项式乘多项式练习题精选41.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41.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41
(-x3)(-9x-2)2a(5a-4b)(8x+2y)(-9x)
51
(—ab3+6ab)•—ab24x(3x-4)+4x(4x+4)+x(x-4)
65
(6×104)×(-5×102)(-ab4)(-5a)(-2x)2(4x3y3)
-3x•9x27y4•(-2xy2)(2x)3•5x3
(2a)3•(-3a)2-6a•5a4-8y4•3y
(-3x4)(9x-9)-4a(9a-4b)(4x+8y)(-3x)
51
(—ab2-3ab)•—ab34x(x+3)-x(x+4)-3x(x-2)
65
(5×103)×(-9×102)(-a2b)(-6a)(-2x)2(-2x3y3)
-6x•2x4-5y2•(-7x2y4)(3x)2•5x4
(4a)2•(-4a)2-4a2•2a39y•3y4
(-5x3)(-9x-6)2a(8a-5b)(5x-4y)(-3x)
71
(—ab3+3ab)•—ab3x(x-3)-3x(3x+1)+2x(2x+4)
67
(6×104)×(-3×102)(-5a3b3)(-2a)(4x)2(4x2y5)
2x3•2x2y2•(-3x3y2)(4x)3•4x4
(2a)3•(-4a)2-2a•9a33y4•7y
(-x2)(-2x-4)-2a(5a+3b)(5x-8y)(-3x)
51
(—ab2+3ab)•—ab3x(4x-4)+x(4x+1)-2x(2x-3)
45
(7×104)×(-8×109)(-5ab)(-7a)(4x)2(2x3y4)
9x3•6x7y4•(-5xy2)(3x)2•8x3
(3a)3•(3a)3-6a3•2a-5y4•8y
(-x4)(8x+2)7a(7a+3b)(3x+4y)(-4x)
71
(—ab3+5ab)•—ab32x(x+1)+x(x-2)-x(x+2)
67
(7×107)×(-9×108)(-a3b2)(-6a)(-3x)2(4x2y2)
4x•5x-8y2•(-8xy3)(-3x)2•5x3
(2a)2•(2a)3-9a•6a4-9y•4y4
(-x2)(8x-2)2a(5a-7b)(7x-7y)(-5x)
61
(—ab2+2ab)•—ab3x(4x-3)+x(2x-2)+x(x+1)
56
(8×109)×(-4×105)(-8a4b)(-3a)(-2x)2(2x4y2)
2x•8x8y•(-7x2y3)(4x)2•3x4
(-3a)3•(-2a)2-7a•6a4-5y3•6y4
(-x3)(3x+6)9a(9a+8b)(9x+8y)(-6x)
21
(—ab2-6ab)•—ab24x(4x+1)+2x(x+2)-3x(4x+4)
32
(8×102)×(-4×106)(-ab3)(-8a4)(-3x)3(-4x2y5)
5x3•8x6y3•(-8x3y3)(3x)2•4x3
(-2a)3•(2a)2-5a2•7a8y•2y
(-8x4)(3x+1)-8a(7a+8b)(2x-9y)(-3x)
71
(—ab3-4ab)•—ab3x(x-4)-x(x+4)-x(x+2)
67
(6×104)×(-7×103)(-ab)(-2a4)(2x)3(4x4y3)
-4x•2x9y•(-4xy4)(-3x)3•2x4
(-2a)2•(4a)2-6a3•7a3-3y4•3y4
(-5x3)(7x-3)5a(2a+7b)(9x-4y)(-2x)
51
(—ab3+2ab)•—ab23x(x-4)+2x(4x-4)-2x(2x-1)
65
(3×108)×(-7×108)(-a4b3)(-2a3)(3x)3(4x2y3)
-6x4•2x34y2•(-8x4y)(-2x)3•7x4
(-4a)3•(2a)22a•3a44y2•5y2
(-3x3)(-2x+7)-5a(6a+6b)(9x-7y)(-9x)
41
(—ab2-2ab)•—abx(2x+2)-4x(2x+3)+2x(4x+2)
34
(2×108)×(-3×109)(-3ab3)(-7a)(-2x)2(4x3y4)
-8x•7x9y3•(-2xy)(-4x)2•2x2
(-2a)3•(-2a)32a•7a3-2y4•8y
(-x2)(5x+3)-7a(8a-2b)(7x-4y)(-3x)
71
(—ab2-4ab)•—abx(x+3)-x(2x-1)+2x(4x-3)
67
(6×102)×(-2×109)(-8a2b)(-4a)(-4x)3(-2x4y5)
-9x3•8x-4y•(-3x4y)(3x)2•7x2
(-3a)2•(-4a)29a•9a2y4•6y4
(-2x2)(8x-7)2a(9a-5b)(6x-5y)(-4x)
31
(—ab3-4ab)•—abx(x-1)+4x(2x-1)+2x(x+4)
43
(5×106)×(-8×109)(-ab)(-6a)(3x)2(3x3y4)
2x•2x-7y4•(-3x4y4)(-4x)2•9x4
(-2a)3•(-4a)38a3•6a-9y•3y
(-x3)(-9x+8)-3a(2a+4b)(3x+6y)(-9x)
51
(—ab2-5ab)•—ab32x(3x+3)-x(x+2)-2x(2x-1)
65
(5×108)×(-6×102)(-a3b4)(-6a2)(-2x)3(3x4y5)
-9x4•9x49y•(-3xy4)(3x)2•8x2
(-4a)2•(-4a)38a•9a3-8y•2y2
(-x3)(-3x-1)7a(5a-7b)(4x+7y)(-9x)
41
(—ab2+3ab)•—ab2x(x-1)-4x(x-3)+x(x-4)
34
(8×107)×(-4×103)(-ab2)(-5a)(-4x)2(2x3y3)
-5x•9x8y•(-3xy)(2x)2•9x2
(-2a)2•(2a)3-9a4•5a34y4•6y2
(-x2)(6x-2)2a(7a+8b)(8x+7y)(-5x)
61
(—ab3-6ab)•—ab2x(3x-2)-x(3x-3)-x(4x-3)
56
(4×109)×(-5×109)(-a4b4)(-4a)(-4x)3(-3x4y5)
2x•5x9y•(-5xy4)(-3x)3•3x4
(4a)2•(2a)2-5a3•5a4-6y•3y3
(-x2)(6x-2)-4a(8a+7b)(7x-7y)(-5x)
31
(—ab2-6ab)•—ab23x(4x-4)+x(x+3)+4x(2x+3)
43
(7×105)×(-6×102)(-9ab)(-2a)(3x)2(3x4y5)
8x•3x-4y•(-4x3y)(4x)3•9x4
(4a)3•(-2a)23a4•6a2y4•4y4
(-2x4)(-5x+6)2a(3a+7b)(4x-3y)(-5x)
41
(—ab3-5ab)•—ab2x(4x-4)-2x(2x-1)-x(2x-2)
34
(4×104)×(-3×103)(-ab2)(-5a4)(-3x)3(-4x3y3)
3x2•7x-4y2•(-2xy)(-2x)2•2x4
(2a)2•(3a)26a3•7a-3y•9y2
(-x4)(-8x-4)-5a(2a-7b)(5x+3y)(-6x)
31
(—ab2-3ab)•—ab34x(x-2)+4x(x+2)+3x(x-3)
43
(9×103)×(-4×106)(-ab)(-9a2)(-4x)3(-4x2y3)
-9x3•7x3-9y•(-4xy2)(-3x)2•8x4
(-3a)2•(-3a)2-5a•3a6y•4y
(-x3)(-4x-2)-4a(9a-7b)(8x+3y)(-8x)
71
(—ab2+6ab)•—abx(2x+2)-x(x+2)+x(3x+3)
67
(3×108)×(-7×102)(-3ab2)(-5a2)(-3x)3(4x3y3)
8x•9x-2y•(-2x4y2)(-2x)2•7x3
(2a)2•(-2a)23a•8a7y4•9y
(-4x3)(4x-3)7a(6a-8b)(7x+4y)(-8x)
71
(—ab3-2ab)•—abx(x-4)-x(x+2)-x(3x+2)
67
(6×108)×(-5×109)(-7ab4)(-8a4)(2x)3(2x4y5)
-2x4•9x5y•(-9xy)(2x)3•4x4
(2a)2•(3a)25a•6a4-8y2•6y
(-7x2)(3x-5)7a(3a+6b)(2x-9y)(-2x)
51
(—ab2-5ab)•—ab2x(x-2)+3x(3x-1)-4x(x+3)
65
(3×109)×(-9×104)(-ab3)(-8a2)(-3x)2(-3x3y2)
-2x•7x3-5y•(-6x4y2)(2x)2•7x2
(4a)3•(-2a)3-4a•6a4y•4y
(-6x2)(5x+4)-3a(8a-4b)(5x-4y)(-4x)
51
(—ab3+6ab)•—ab24x(4x+4)-x(2x+1)-x(x+1)
45
(7×104)×(-5×109)(-4ab4)(-9a2)(2x)3(3x2y4)
6x3•2x22y2•(-6xy4)(-3x)3•6x2
(2a)2•(4a)25a4•2a4y•8y
(-3x4)(6x+1)8a(9a+8b)(5x-9y)(-2x)
71
(—ab2-5ab)•—ab22x(x-1)-x(4x-2)+3x(x-1)
67
(8×106)×(-4×105)(-5a3b)(-6a3)(-3x)2(2x2y3)
2x•5x-3y•(-7x3y4)(2x)2•9x3
(2a)3•(2a)23a•6a44y•8y
(-5x2)(-5x-2)3a(8a-3b)(6x+3y)(-6x)
41
(—ab2-4ab)•—ab23x(x+2)-4x(4x+3)+2x(x-2)
34
(2×105)×(-4×109)(-ab3)(-8a)(-2x)3(4x3y5)
5x3•4x-7y4•(-4x3y)(3x)3•9x4
(2a)2•(-4a)2-6a2•9a-8y•7y
(-8x2)(-7x+3)-2a(6a+6b)(2x-5y)(-5x)
61
(—ab2-2ab)•—abx(x-2)-x(x-4)-4x(x-4)
56
(8×106)×(-4×102)(-a4b)(-6a)(3x)2(4x4y4)
9x2•6x8y2•(-5x4y)(-3x)2•8x2
(-4a)2•(-3a)2-8a•3a6y2•3y
(-8x3)(7x+2)7a(5a+2b)(5x+7y)(-7x)
71
(—ab2-6ab)•—ab24x(x+2)-3x(x+3)+x(2x-4)
67
(8×108)×(-5×108)(-ab)(-6a)(4x)3(2x3y3)
-6x4•7x-6y2•(-3x3y3)(-4x)3•2x4
(-4a)2•(-2a)23a•7a-5y•7y
(-x4)(2x-3)3a(6a+6b)(7x+5y)(-7x)
51
(—ab2+5ab)•—abx(2x-2)-x(x-4)-x(x+4)
65
(6×109)×(-2×103)(-a3b2)(-3a3)(3x)2(3x4y3)
3x•2x3y4•(-3xy3)(-3x)2•4x3
(2a)3•(-2a)2-5a•9a2-2y2•7y3
(-x4)(6x-8)3a(2a-9b)(5x-8y)(-4x)
41
(—ab2+5ab)•—ab24x(3x-1)-4x(2x-2)+x(x+3)
54
(6×103)×(-5×102)(-a3b)(-3a4)(-2x)3(-4x4y4)
-7x4•7x3-3y4•(-6xy)(-3x)3•2x3
(-4a)3•(2a)2-8a3•7a7y4•7y3
(-2x4)(-5x-5)2a(4a+4b)(8x+2y)(-4x)
21
(—ab2-6ab)•—ab2x(x+3)+3x(x+2)-2x(x-3)
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