人教版初二数学上册单项式乘多项式练习题精选54.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54.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54
(-2x2)(6x+4)-4a(6a-8b)(5x+2y)(-9x)
31
(—ab2-3ab)•—ab32x(4x-2)-3x(2x+4)+3x(3x+2)
43
(4×108)×(-6×102)(-ab)(-8a)(-2x)3(-2x3y3)
8x2•5x3-5y•(-5x3y)(-4x)3•8x3
(-2a)2•(-3a)24a•7a3-2y•9y
(-x3)(-6x-3)9a(8a+5b)(2x-9y)(-9x)
41
(—ab3-4ab)•—abx(x-2)+x(4x-1)-3x(x+1)
54
(2×105)×(-5×107)(-ab4)(-8a4)(-2x)2(4x2y3)
-9x3•2x22y•(-2x3y4)(-4x)3•9x3
(-2a)3•(3a)3-9a•4a9y4•2y4
(-9x4)(9x-9)-6a(4a-4b)(7x+6y)(-6x)
41
(—ab2+6ab)•—ab2x(x-2)+x(x+1)-x(x-1)
54
(5×104)×(-9×109)(-2ab2)(-6a2)(-2x)2(-3x3y5)
2x4•7x2y2•(-2xy2)(3x)3•3x2
(3a)3•(-3a)2-5a•6a8y3•5y
(-9x4)(3x+9)-4a(3a-8b)(3x-5y)(-3x)
21
(—ab3+3ab)•—ab3x(x-4)-4x(x-3)+x(x+3)
32
(9×105)×(-7×103)(-7ab4)(-5a)(2x)3(-2x4y3)
-3x•8x2-2y•(-9xy4)(-2x)2•7x4
(2a)3•(3a)2-5a•8a42y•4y
(-7x3)(-7x-9)-4a(9a-5b)(5x+9y)(-8x)
41
(—ab3+3ab)•—abx(x-2)-x(x+2)-4x(3x-3)
54
(5×108)×(-7×108)(-6a2b)(-5a)(4x)3(3x2y3)
7x2•4x7y2•(-3xy4)(-4x)3•9x2
(-3a)2•(3a)3-8a4•6a4y•6y
(-x2)(5x-9)-5a(3a+7b)(2x-5y)(-5x)
61
(—ab2+5ab)•—ab3x(4x+1)+x(x+1)+x(3x-2)
56
(4×104)×(-6×105)(-8a3b4)(-6a2)(-2x)2(2x2y4)
6x•7x2-8y•(-8xy3)(-3x)3•2x3
(3a)2•(2a)33a•8a4-8y2•5y3
(-x2)(-5x-7)-2a(2a+9b)(8x+2y)(-2x)
41
(—ab2+2ab)•—ab2x(3x-1)+x(x+1)-x(x+1)
34
(3×103)×(-3×107)(-8a4b2)(-9a)(-4x)2(4x2y2)
-8x•6x3-5y2•(-9x2y2)(-2x)2•7x3
(4a)2•(-4a)3-4a•2a4y4•8y3
(-3x2)(3x+7)7a(3a-2b)(9x-8y)(-2x)
71
(—ab2-3ab)•—abx(x+3)-x(4x+1)-2x(3x+4)
67
(4×105)×(-2×105)(-ab2)(-7a)(3x)2(2x4y3)
9x•9x3-4y3•(-3x3y)(3x)2•2x3
(-2a)3•(4a)3-6a2•2a47y2•9y
(-9x2)(-7x-7)8a(7a-2b)(9x-9y)(-3x)
21
(—ab2-5ab)•—ab32x(x-1)-x(3x-3)-2x(x+1)
32
(9×102)×(-5×108)(-4a2b)(-3a3)(-3x)3(4x3y2)
-5x3•2x-9y•(-7x3y3)(-2x)2•4x4
(3a)3•(-4a)3-6a4•2a2-6y2•9y
(-x4)(4x-7)-3a(8a-3b)(7x+8y)(-6x)
41
(—ab2+4ab)•—ab2x(x-1)-x(x+2)+2x(x-3)
54
(2×104)×(-4×106)(-ab)(-4a2)(3x)3(-2x3y3)
4x3•3x-4y4•(-6x3y)(-3x)2•8x3
(-3a)3•(-4a)3-8a4•2a44y•6y2
(-x2)(5x+1)8a(5a+6b)(9x+5y)(-5x)
51
(—ab3+5ab)•—abx(3x-2)+3x(4x-1)-2x(x-1)
65
(9×108)×(-5×106)(-ab)(-8a3)(-3x)3(-3x3y5)
7x•5x-4y•(-7x3y)(3x)2•6x4
(-3a)3•(-4a)32a3•2a-9y3•5y4
(-3x4)(6x-9)2a(6a+8b)(2x+3y)(-2x)
61
(—ab3-6ab)•—ab3x(4x-3)-x(2x+1)-x(2x-4)
56
(2×106)×(-3×109)(-9ab3)(-6a2)(-2x)2(2x2y2)
5x4•5x-3y•(-3xy)(3x)3•9x2
(3a)3•(-2a)34a•7a5y2•9y4
(-5x3)(6x+2)6a(9a+6b)(6x-3y)(-8x)
61
(—ab3-4ab)•—ab2x(2x+1)+4x(3x-4)-4x(2x-3)
56
(2×108)×(-3×102)(-a2b)(-8a)(-2x)3(-2x4y2)
-3x4•7x4-6y•(-8x4y3)(4x)2•7x4
(-2a)3•(3a)23a2•9a2y2•2y
(-8x2)(6x+4)5a(9a-5b)(6x-5y)(-5x)
61
(—ab3+5ab)•—ab3x(2x+4)-x(x-2)+x(x+2)
56
(7×107)×(-8×104)(-a4b)(-2a3)(4x)2(-4x2y2)
9x3•9x4-2y4•(-8x2y4)(-4x)3•9x2
(3a)2•(-3a)3-5a•8a9y2•4y
(-4x2)(-7x-9)8a(7a-3b)(5x-3y)(-7x)
71
(—ab2+6ab)•—ab4x(4x-4)+x(x-2)+2x(x-2)
67
(3×108)×(-7×104)(-9a2b)(-9a3)(4x)2(-4x3y5)
8x3•2x-4y•(-7xy4)(-4x)3•3x4
(-2a)2•(-2a)37a4•5a26y•5y
(-x4)(8x-5)-6a(5a-3b)(3x+7y)(-8x)
41
(—ab2-2ab)•—abx(x-1)+3x(4x+4)-x(x+4)
34
(5×106)×(-7×105)(-6a4b)(-9a3)(3x)2(4x4y3)
4x•7x27y3•(-4x2y)(2x)3•5x4
(-4a)3•(2a)22a2•2a-4y3•9y
(-x4)(9x-6)-6a(7a+4b)(3x+9y)(-9x)
31
(—ab2-2ab)•—ab32x(x+2)+x(2x-1)+4x(x+4)
43
(2×104)×(-9×107)(-ab4)(-7a4)(-2x)2(-3x3y3)
-2x4•2x-5y3•(-3xy3)(-3x)3•5x3
(-2a)2•(2a)35a3•2a-4y•7y4
(-x4)(-5x+9)6a(2a-7b)(5x+4y)(-8x)
21
(—ab3+3ab)•—ab34x(x+1)-4x(3x-3)-2x(3x-1)
32
(4×106)×(-2×109)(-4ab4)(-7a4)(-3x)2(-2x4y4)
-3x3•9x2-5y3•(-2xy4)(-4x)3•5x2
(-4a)2•(-3a)33a•2a4-8y2•8y4
(-6x3)(-8x-2)-8a(8a+9b)(3x-7y)(-3x)
61
(—ab3-5ab)•—ab2x(x-3)+2x(2x-1)-2x(3x+3)
56
(3×109)×(-3×106)(-ab3)(-6a)(-3x)2(-3x2y5)
-3x•9x4-5y•(-6xy4)(-4x)2•2x4
(4a)2•(2a)2-2a2•6a22y•7y2
(-8x2)(3x+1)-5a(3a-4b)(2x+9y)(-5x)
41
(—ab2-6ab)•—abx(x-3)+3x(x-2)+2x(x+3)
34
(3×106)×(-6×106)(-6ab)(-4a)(-2x)2(3x4y3)
-8x•4x-8y•(-4x2y3)(-4x)3•3x4
(-4a)3•(-4a)25a•3a8y•6y
(-8x4)(6x+8)-6a(7a-2b)(8x-3y)(-5x)
51
(—ab2-5ab)•—ab24x(4x+3)-4x(4x-2)-4x(2x+3)
45
(4×107)×(-3×107)(-6a4b)(-4a)(-3x)3(3x2y4)
-2x4•2x9y3•(-8xy)(-4x)2•5x2
(-3a)2•(4a)35a3•9a-4y3•5y4
(-2x4)(-4x+8)-2a(8a-8b)(4x-2y)(-8x)
41
(—ab3-4ab)•—ab3x(x+4)+3x(x+4)+x(4x-4)
34
(4×102)×(-4×108)(-ab)(-4a3)(-4x)2(-4x3y5)
8x•5x32y4•(-4xy)(-4x)3•4x4
(-3a)3•(-2a)3-8a4•6a7y•3y
(-4x2)(-9x-4)-9a(3a+8b)(3x-6y)(-5x)
21
(—ab3-2ab)•—ab4x(4x+4)+x(x+3)+x(4x+1)
32
(6×105)×(-4×108)(-ab2)(-3a2)(-4x)2(-4x4y4)
-9x2•7x3-2y•(-4x4y)(-2x)2•6x3
(-3a)2•(-3a)3-4a•4a28y3•7y
(-2x4)(-2x-9)4a(2a+5b)(4x-3y)(-5x)
41
(—ab2-2ab)•—ab24x(x-3)-x(x-1)-x(x+2)
34
(9×103)×(-2×105)(-6a2b)(-9a)(3x)3(4x4y2)
3x•3x4-9y3•(-2x2y4)(2x)3•6x2
(4a)2•(-2a)2-5a•6a4y•4y
(-x3)(2x-3)-9a(9a-9b)(5x+3y)(-7x)
51
(—ab2-2ab)•—abx(x+1)-4x(x-3)+3x(3x-3)
65
(2×108)×(-8×105)(-ab)(-8a)(-4x)2(2x3y5)
8x2•2x5y4•(-9xy)(-4x)2•3x3
(3a)3•(-3a)3-3a4•5a39y2•3y3
(-2x2)(2x-2)4a(2a-3b)(9x-6y)(-5x)
51
(—ab2+3ab)•—abx(4x-2)+x(3x+4)-4x(x+1)
45
(9×103)×(-6×104)(-ab)(-3a3)(2x)3(-2x2y5)
3x2•5x38y•(-4x4y2)(-3x)2•7x2
(3a)2•(-3a)3-7a•9a2y•8y
(-6x2)(8x+8)3a(5a-8b)(4x+3y)(-3x)
41
(—ab2+4ab)•—ab3x(2x-4)+2x(x+1)-x(x-2)
54
(2×103)×(-7×109)(-2a4b)(-5a4)(-3x)2(-4x4y3)
8x•8x-2y•(-7xy)(-4x)3•5x4
(-4a)2•(-4a)36a•9a2-9y•5y
(-4x4)(-3x+2)9a(4a-2b)(5x-2y)(-5x)
31
(—ab3+5ab)•—ab2x(4x-1)+x(x-4)+2x(x+4)
43
(5×107)×(-2×103)(-4a2b)(-9a)(-4x)2(-2x2y5)
-3x•8x3-4y•(-5xy)(-4x)2•6x4
(-3a)3•(3a)24a3•8a29y2•6y
(-4x3)(-2x+1)9a(7a+8b)(9x+9y)(-3x)
31
(—ab2+3ab)•—ab
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