人教版初二数学上册单项式乘多项式练习题精选20.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20
(-8x2)(-7x-8)5a(7a-4b)(9x-9y)(-6x)
71
(—ab3-5ab)•—ab2x(x-3)-2x(3x-1)-4x(x-1)
67
(6×102)×(-7×106)(-ab3)(-6a3)(2x)2(3x4y4)
3x4•9x47y2•(-4x3y3)(-3x)2•4x3
(-3a)3•(-2a)39a•8a2-6y•5y3
(-7x2)(-2x-9)9a(8a-4b)(5x+8y)(-4x)
31
(—ab2+4ab)•—ab3x(x-1)-4x(x+4)-3x(x-4)
43
(6×108)×(-3×106)(-ab2)(-5a)(-2x)2(3x2y5)
-6x3•7x3-9y•(-5x3y)(-3x)3•2x3
(-3a)3•(4a)37a•8a4-5y•4y
(-x4)(-2x+8)-7a(7a-4b)(5x+4y)(-9x)
51
(—ab2+2ab)•—ab3x(3x+4)-x(x-2)+4x(x-1)
65
(2×107)×(-2×108)(-ab)(-9a)(-3x)3(-3x2y2)
8x4•5x4-9y•(-6x4y)(2x)2•7x2
(3a)3•(4a)39a4•6a2-9y2•8y
(-6x2)(-8x+8)-9a(2a-9b)(4x-3y)(-3x)
21
(—ab2+5ab)•—ab23x(x-2)-3x(4x-1)+x(x-2)
32
(5×106)×(-7×106)(-a3b3)(-5a3)(-4x)3(2x2y5)
-3x•5x2-8y2•(-9x3y)(-3x)3•8x3
(3a)2•(2a)2-2a•3a3-2y•7y
(-x2)(5x-4)5a(8a+4b)(6x+2y)(-5x)
41
(—ab3-4ab)•—ab3x(x-2)-x(3x+1)+2x(3x-3)
54
(4×107)×(-4×108)(-5a2b)(-7a4)(2x)2(3x2y5)
-7x•9x2-9y•(-7xy2)(-3x)2•9x3
(-4a)2•(2a)22a•6a-7y•4y2
(-8x4)(-3x-7)-7a(3a+9b)(3x-5y)(-7x)
31
(—ab3+3ab)•—abx(2x+4)-4x(3x-2)+x(4x-3)
43
(9×107)×(-8×107)(-4ab2)(-3a)(3x)3(-3x2y3)
-6x4•6x22y•(-8x2y)(4x)3•7x3
(3a)3•(-4a)3-5a•6a8y2•8y3
(-x3)(-7x+4)5a(2a+2b)(2x-8y)(-5x)
41
(—ab3+5ab)•—ab22x(4x+3)+x(4x-3)+x(4x+4)
54
(8×104)×(-2×109)(-ab)(-2a)(4x)3(3x2y2)
2x4•3x4-2y3•(-4xy3)(3x)3•6x2
(4a)2•(3a)2-8a•3a-9y2•6y2
(-5x3)(6x-9)-9a(7a-7b)(2x+4y)(-8x)
41
(—ab2+3ab)•—ab2x(2x+2)+4x(x-2)+x(2x-1)
54
(3×109)×(-2×103)(-a2b2)(-5a4)(-2x)2(2x3y2)
4x•4x37y•(-6xy3)(2x)2•4x3
(-2a)2•(2a)2-2a•5a4-2y4•3y4
(-x2)(-5x-9)-5a(2a-3b)(8x+9y)(-8x)
61
(—ab2-5ab)•—ab34x(3x-2)-3x(2x-2)-4x(3x-3)
56
(8×106)×(-9×105)(-5a2b)(-3a2)(-3x)2(-4x4y3)
-4x2•6x-9y•(-2xy3)(-4x)2•4x3
(3a)3•(-4a)2-9a•6a-9y•6y2
(-x4)(4x+9)-6a(9a-8b)(5x-9y)(-3x)
31
(—ab2-2ab)•—ab3x(x-1)+3x(3x-1)+2x(2x+4)
43
(6×107)×(-7×106)(-a2b4)(-5a3)(-3x)2(-3x3y2)
-9x•8x3-7y•(-7xy)(-4x)3•8x4
(-2a)3•(-2a)2-2a•4a48y•7y4
(-8x3)(-3x+6)-8a(8a-9b)(3x-5y)(-5x)
71
(—ab2+3ab)•—ab4x(x+1)-4x(x-4)+x(x+2)
67
(5×105)×(-6×105)(-ab)(-2a3)(4x)2(4x2y5)
5x2•6x29y3•(-7x3y)(-2x)2•2x2
(-3a)2•(2a)2-8a2•9a32y•6y2
(-x2)(9x+8)-4a(7a-9b)(8x+4y)(-9x)
21
(—ab2-2ab)•—ab3x(x-1)+x(2x-4)+3x(2x-3)
32
(4×108)×(-4×108)(-a4b)(-8a3)(4x)2(-2x4y5)
-8x•2x34y•(-7x4y3)(4x)2•4x4
(3a)3•(4a)2-3a•4a3-4y•5y
(-x3)(7x+9)8a(7a+6b)(7x+6y)(-4x)
71
(—ab3-2ab)•—ab23x(3x+3)-x(x-2)+3x(3x-3)
67
(6×102)×(-2×107)(-8ab)(-3a)(-2x)3(3x3y4)
-3x•9x37y4•(-9xy4)(-4x)3•3x4
(-2a)2•(-2a)23a•3a-5y2•4y3
(-x2)(-7x+2)-6a(6a+7b)(8x-2y)(-5x)
51
(—ab3+4ab)•—ab3x(x+1)-4x(x-1)-x(3x+4)
45
(2×105)×(-5×102)(-ab)(-3a3)(4x)2(-4x3y5)
-6x•3x-4y•(-2xy2)(-2x)2•9x4
(-3a)3•(3a)3-3a3•9a-9y3•4y3
(-x3)(9x-6)-4a(6a+2b)(5x-7y)(-6x)
41
(—ab3-6ab)•—ab2x(3x-2)-x(x+1)-2x(x+4)
54
(7×102)×(-7×105)(-a3b3)(-8a4)(4x)2(-3x4y5)
8x3•5x2-3y•(-8x4y2)(3x)2•3x2
(-4a)2•(3a)3-7a•8a4-4y•5y
(-x4)(-3x-5)-9a(8a+5b)(8x-4y)(-9x)
41
(—ab2+4ab)•—ab22x(3x+3)-4x(x+1)+3x(4x-3)
34
(3×108)×(-3×104)(-ab)(-7a)(-4x)2(4x2y4)
7x•3x27y2•(-4xy)(3x)3•8x3
(-4a)3•(3a)3-9a2•5a4-7y•7y
(-x3)(-9x-2)-5a(6a-3b)(9x-2y)(-4x)
21
(—ab3-2ab)•—ab3x(4x+3)+3x(x-2)-3x(x+2)
32
(3×105)×(-7×108)(-ab4)(-6a2)(-4x)2(-4x3y2)
9x•2x4-2y4•(-3xy4)(-4x)2•2x2
(3a)3•(-2a)33a•4a32y4•5y
(-4x4)(6x+6)6a(6a+9b)(5x+3y)(-7x)
41
(—ab3+5ab)•—ab2x(4x-3)-x(2x+3)-x(x+2)
54
(8×109)×(-9×107)(-ab)(-7a)(-4x)3(-4x4y4)
-9x4•9x-4y•(-9xy3)(4x)3•7x4
(4a)2•(2a)3-7a•8a4-4y3•9y2
(-9x4)(4x-6)8a(7a+7b)(7x+6y)(-7x)
71
(—ab2-3ab)•—ab23x(x-2)-x(4x+3)+x(x+3)
67
(9×104)×(-9×104)(-2a2b2)(-9a)(-3x)3(2x4y4)
-2x2•5x44y•(-5x2y3)(-2x)3•5x3
(-4a)2•(2a)24a•3a42y•4y
(-9x4)(5x+5)-2a(9a+9b)(7x-4y)(-4x)
41
(—ab2-3ab)•—ab3x(2x+3)-3x(x+2)+x(x-3)
34
(3×107)×(-8×107)(-ab4)(-8a3)(-4x)3(-3x4y2)
7x2•7x4-6y•(-9xy)(2x)2•8x3
(4a)2•(4a)29a•9a2-7y3•4y2
(-x3)(-4x+4)2a(9a-3b)(5x+6y)(-3x)
21
(—ab2+2ab)•—ab3x(2x-1)+4x(x-3)-x(4x+1)
32
(6×106)×(-8×105)(-ab)(-5a2)(-3x)2(3x2y4)
-4x4•7x5y4•(-5xy3)(2x)2•3x3
(3a)2•(3a)34a3•6a-2y•3y
(-x3)(6x+7)9a(8a-6b)(7x+7y)(-9x)
51
(—ab3+6ab)•—ab3x(x+1)-x(4x-4)-3x(x-4)
65
(8×109)×(-3×107)(-2ab)(-8a2)(-4x)2(3x3y4)
-8x2•2x-8y•(-3xy4)(4x)3•6x2
(-4a)3•(3a)33a•6a45y4•2y
(-7x4)(4x-9)9a(4a-8b)(2x-3y)(-8x)
61
(—ab2-3ab)•—ab24x(3x+4)+x(x+4)+x(4x-4)
56
(6×105)×(-6×109)(-2a3b3)(-7a4)(4x)2(2x4y4)
-3x•8x-2y2•(-2x4y4)(-2x)3•5x2
(-3a)2•(-4a)38a•6a-8y4•6y
(-x4)(4x-6)8a(3a-8b)(6x-7y)(-7x)
41
(—ab3-3ab)•—ab24x(4x-3)-4x(x-4)-2x(4x-2)
54
(9×106)×(-8×107)(-3a2b)(-5a)(2x)3(2x3y5)
-3x•5x7y•(-7xy)(4x)2•4x4
(2a)2•(3a)3-7a4•9a7y•5y4
(-x2)(5x+2)6a(6a+3b)(6x-6y)(-2x)
51
(—ab3+4ab)•—ab34x(x-2)+x(3x-3)-x(2x+4)
45
(7×107)×(-4×106)(-ab2)(-8a3)(-3x)2(-4x2y5)
-5x3•5x-2y4•(-4xy)(-2x)3•2x3
(-4a)3•(3a)22a•4a4-5y•5y
(-x2)(-2x+4)-2a(5a-2b)(2x-7y)(-3x)
21
(—ab3-6ab)•—ab2x(x-1)-x(4x-3)-4x(x-2)
32
(2×107)×(-4×109)(-a2b2)(-5a)(3x)2(-2x4y4)
6x4•2x2y4•(-7x2y)(-2x)2•4x2
(2a)3•(2a)22a•5a-3y2•7y2
(-x3)(9x+6)3a(8a+9b)(3x-2y)(-6x)
71
(—ab2+2ab)•—ab2x(x-4)+x(x+3)-4x(x-1)
67
(2×109)×(-9×109)(-a3b3)(-5a4)(4x)3(3x2y3)
-7x3•8x4-2y•(-5xy2)(3x)3•4x2
(-4a)3•(-3a)2-7a•6a23y•9y
(-x2)(-2x+6)-4a(3a-8b)(9x+5y)(-6x)
71
(—ab3-2ab)•—ab2x(3x+3)-x(3x+3)-3x(4x-1)
67
(9×107)×(-3×106)(-ab2)(-3a2)(-2x)2(2x4y2)
5x•8x4y•(-3xy3)(-3x)3•2x2
(-3a)2•(2a)24a•9a8y•7y2
(-8x2)(-3x-6)2a(3a+2b)(9x+7y)(-4x)
61
(—ab2-6ab)•—ab34x(3x+2