人教版初二数学上册单项式乘多项式练习题精选23.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23
(-3x4)(-7x+9)7a(9a-6b)(9x+4y)(-4x)
41
(—ab2+6ab)•—abx(4x-3)-3x(3x-2)-2x(2x+2)
34
(3×108)×(-7×109)(-ab2)(-5a4)(3x)3(2x3y5)
-7x3•8x4-6y2•(-2x2y2)(-4x)2•4x3
(-3a)2•(3a)38a3•7a4-7y•7y2
(-6x3)(-8x+7)3a(4a+7b)(7x-7y)(-7x)
21
(—ab2+4ab)•—ab22x(x+4)+x(x-1)+3x(4x+2)
32
(9×109)×(-7×103)(-9ab)(-7a3)(-4x)3(-3x3y2)
8x2•3x47y4•(-6x3y2)(-3x)2•7x2
(2a)3•(4a)2-7a2•9a3y2•8y4
(-8x3)(2x-5)5a(7a+9b)(4x-4y)(-8x)
51
(—ab2+4ab)•—ab22x(x-1)-x(4x+2)-3x(x+2)
45
(6×106)×(-2×109)(-3a4b)(-4a4)(4x)2(2x3y5)
-3x2•7x8y2•(-3x3y4)(3x)3•3x4
(-3a)3•(4a)39a2•4a6y2•9y3
(-3x3)(-7x-1)8a(8a-3b)(3x+8y)(-3x)
51
(—ab3+5ab)•—ab3x(3x+1)-x(x+1)+4x(2x+2)
45
(5×107)×(-6×109)(-8ab)(-3a)(2x)2(-4x2y3)
4x•7x4-4y•(-8x3y2)(-4x)2•7x3
(-4a)3•(-2a)2-7a4•8a-5y•6y3
(-7x4)(9x-7)-6a(7a+7b)(5x-9y)(-4x)
41
(—ab3+4ab)•—ab3x(x+1)-4x(4x-4)-x(2x+2)
54
(4×107)×(-4×109)(-a2b)(-6a)(-3x)2(3x4y2)
7x3•8x-6y3•(-9x3y)(-4x)2•5x3
(2a)3•(-2a)3-2a3•7a4y2•6y
(-7x2)(8x-1)6a(6a+5b)(6x+6y)(-6x)
51
(—ab3+2ab)•—abx(x+2)+2x(x+1)-x(x+2)
65
(3×102)×(-4×107)(-8a4b2)(-8a)(-4x)3(4x3y5)
-5x•5x-9y•(-8xy)(3x)3•7x2
(-2a)3•(4a)22a•6a26y3•6y3
(-4x3)(7x+1)3a(3a+7b)(2x+2y)(-7x)
51
(—ab2-5ab)•—ab3x(x+1)+x(x+4)-3x(3x+4)
65
(8×104)×(-6×104)(-a4b)(-6a3)(-2x)3(2x2y5)
-3x•9x2-7y4•(-5xy4)(2x)2•9x2
(-4a)2•(4a)37a3•2a-6y4•2y
(-x2)(8x+2)2a(8a-7b)(2x+8y)(-9x)
41
(—ab2+3ab)•—ab4x(4x+1)+2x(2x-3)-x(3x+3)
54
(9×108)×(-8×109)(-6a3b3)(-3a3)(-2x)3(-3x4y3)
-6x•2x5y3•(-6xy)(3x)2•5x3
(4a)3•(4a)3-4a4•4a5y•3y3
(-x3)(4x-9)-8a(9a+4b)(8x-7y)(-7x)
51
(—ab2-6ab)•—ab34x(x-4)-x(2x-1)+x(2x-3)
45
(9×107)×(-7×108)(-2ab)(-8a3)(2x)3(-3x2y5)
-8x•7x-7y3•(-2xy2)(2x)3•6x2
(-3a)2•(-2a)36a•6a-3y4•9y
(-x3)(-9x+5)-6a(5a-9b)(6x-8y)(-4x)
61
(—ab2+6ab)•—ab2x(x+4)-x(x-4)+3x(4x+2)
56
(6×104)×(-9×102)(-4ab4)(-8a2)(-3x)3(-4x3y3)
-2x•4x2-7y•(-8x3y)(-3x)3•9x3
(-3a)2•(4a)2-9a•4a3-6y•8y4
(-7x2)(4x+4)-5a(6a-5b)(5x-7y)(-9x)
51
(—ab3-4ab)•—ab2x(2x-2)+3x(4x-1)+x(x-2)
65
(3×108)×(-3×108)(-ab3)(-4a4)(-3x)2(-3x3y2)
-2x2•9x5y•(-4x4y3)(-4x)2•2x4
(3a)2•(-4a)2-3a•9a7y2•7y2
(-9x4)(9x-9)7a(9a-4b)(4x+4y)(-4x)
51
(—ab3+4ab)•—ab2x(4x+1)-x(4x-1)+3x(2x+1)
45
(3×108)×(-9×105)(-7a4b)(-4a2)(3x)2(3x3y3)
-6x•4x2y3•(-2xy4)(-2x)2•4x3
(4a)2•(-4a)39a•5a39y•7y
(-4x2)(7x-4)-6a(6a+5b)(5x-2y)(-9x)
51
(—ab3+3ab)•—ab2x(x-1)+x(4x+4)-4x(4x+3)
45
(7×109)×(-4×104)(-a4b2)(-8a2)(-4x)3(2x2y2)
-3x3•2x-5y•(-4x2y)(3x)2•2x2
(-3a)2•(4a)38a2•7a3-3y2•5y
(-x3)(3x-8)-8a(2a-2b)(2x+3y)(-5x)
61
(—ab2-3ab)•—ab2x(x-1)-x(x+4)-x(4x+1)
56
(7×109)×(-3×104)(-ab3)(-9a)(-2x)3(-3x2y2)
-2x•5x3-7y•(-7xy)(-2x)2•2x3
(3a)2•(-4a)3-4a•2a-6y4•5y3
(-4x4)(3x+4)2a(5a+8b)(7x-9y)(-4x)
31
(—ab3+2ab)•—ab2x(2x+3)-x(x+1)+2x(x+3)
43
(4×108)×(-3×104)(-3ab2)(-8a3)(2x)2(-2x3y4)
-9x2•3x-4y4•(-3x4y)(-2x)2•8x4
(-3a)2•(-2a)3-6a•8a-5y•9y2
(-x2)(-5x-1)-8a(2a-3b)(6x-6y)(-5x)
21
(—ab3-3ab)•—ab22x(4x+4)+x(4x-4)+x(x-1)
32
(3×103)×(-5×103)(-6ab4)(-5a)(2x)2(3x4y5)
6x•7x27y4•(-4x3y3)(-2x)3•2x3
(-3a)2•(-3a)33a2•2a6y•9y
(-8x4)(7x-9)-8a(9a-4b)(3x-2y)(-7x)
71
(—ab3+6ab)•—ab32x(2x+2)+2x(x-4)+x(2x+3)
67
(2×108)×(-2×105)(-a4b)(-2a)(4x)2(4x4y5)
-7x4•4x4-4y3•(-6x4y4)(3x)3•8x3
(3a)2•(3a)34a2•8a37y•5y2
(-2x4)(5x-4)-6a(5a-4b)(6x+8y)(-3x)
71
(—ab2+3ab)•—abx(x-3)-2x(x+4)+x(x+4)
67
(4×103)×(-7×109)(-3a3b4)(-8a3)(2x)3(2x2y2)
-3x4•4x2-6y•(-9xy4)(-3x)2•3x4
(2a)2•(4a)24a•3a4-2y3•2y
(-3x2)(-3x+5)6a(2a+9b)(7x-3y)(-4x)
31
(—ab3+3ab)•—ab4x(x-4)+x(2x+2)+x(2x+1)
43
(6×103)×(-8×109)(-ab3)(-8a)(4x)2(3x2y3)
-8x•6x4-2y2•(-7x2y3)(4x)2•2x2
(-4a)3•(-3a)3-6a2•2a-8y4•4y2
(-7x3)(-4x-9)8a(9a-2b)(3x+4y)(-8x)
51
(—ab2-4ab)•—ab23x(x-3)+2x(x-3)-4x(x-4)
65
(6×105)×(-8×105)(-ab2)(-9a3)(-4x)3(4x3y3)
-8x4•2x47y•(-8x3y3)(-4x)3•7x4
(-3a)3•(-2a)3-7a2•3a24y3•9y3
(-x3)(5x-8)9a(7a+5b)(7x+9y)(-2x)
31
(—ab2+2ab)•—ab2x(x+1)-x(4x+2)-x(x-3)
43
(8×105)×(-2×104)(-7a4b)(-7a4)(3x)3(-3x4y5)
5x•5x2-8y2•(-5x4y)(-4x)3•2x3
(-4a)2•(-2a)3-2a•6a-4y•6y
(-2x4)(3x+9)9a(7a+3b)(7x+3y)(-3x)
41
(—ab2+6ab)•—ab3x(x-1)-x(4x+2)-x(x+1)
34
(8×109)×(-8×106)(-ab4)(-7a4)(-2x)2(-3x2y5)
7x4•5x44y•(-8xy)(-2x)2•5x2
(-3a)2•(4a)2-5a3•2a4-5y•2y2
(-x4)(4x+3)5a(2a+9b)(3x+6y)(-8x)
61
(—ab2+3ab)•—ab33x(3x-4)+x(4x-2)-x(x+4)
56
(2×105)×(-8×104)(-a2b4)(-5a)(4x)2(3x4y5)
-2x3•4x7y•(-9x3y)(2x)2•3x2
(-4a)2•(4a)37a4•2a-2y•8y2
(-8x4)(-2x-9)6a(6a+2b)(2x-9y)(-2x)
71
(—ab2+2ab)•—abx(2x-2)-3x(3x+4)-x(3x-2)
67
(2×105)×(-4×103)(-a2b3)(-7a)(3x)3(2x3y3)
-4x4•4x2-9y•(-3x4y)(-2x)2•8x3
(4a)2•(2a)2-6a4•3a4y3•5y
(-8x2)(3x+4)2a(7a-7b)(4x+4y)(-9x)
31
(—ab3-4ab)•—abx(x-4)+x(x+1)-4x(2x+3)
43
(9×102)×(-4×106)(-ab)(-4a2)(-2x)3(2x2y3)
2x3•2x45y4•(-5xy)(2x)2•2x3
(4a)2•(-4a)3-4a2•9a2y•2y
(-2x3)(-3x-5)8a(3a+3b)(5x+9y)(-2x)
51
(—ab3-2ab)•—ab2x(x-2)+4x(x-2)-4x(3x+1)
45
(8×109)×(-4×106)(-4ab)(-6a4)(2x)3(4x2y4)
-6x•4x4y•(-5x4y)(-4x)3•4x3
(4a)2•(3a)24a•3a-9y•8y
(-x4)(-4x-5)-4a(3a-3b)(5x+5y)(-6x)
21
(—ab2+3ab)•—ab34x(x+4)+x(3x-3)+x(3x+1)
32
(2×109)×(-3×105)(-ab4)(-3a)(2x)3(-2x2y2)
8x•4x2-4y2•(-8x4y)(-4x)3•2x3
(-2a)2•(-2a)39a•2a-8y•2y3
(-9x4)(-2x+8)-9a(8a-6b)(6x+3y)(-7x)
71
(—ab2+5ab)•—ab2x(x+1)-3x(3x-4)+x(4x-3)
67
(2×106)×(-7×109)(-ab)(-4a)(3x)3(-4x3y2)
7x3•9x8y•(-2x4y4)(-3x)3•6x4
(4a)3•(3a)2-7a•9a-4y•8y
(-x2)(2x-8)-6a(3a-7b)(3x-5y)(-2x)
51
(—ab3+3ab)•—ab3