人教版初中八年级数学上册整式的乘法和因式分解练习题68Word格式文档下载.docx
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(5a)2•b2÷
18ab(x2y2+x4y4z2)÷
9x2y2
(x+4)2+(4x+1)(2x-3)(y-z)2-(4y+z)(3y-z)
x2-49y2(q+a)(6x+3y)-(q+a)(6x+6y)
a2-14am+49m216-48(d+n)+36(d+n)2
b3-4b16x4-256
55a+90a16ab2c+90bc
8q(x-9)+20p(x-9)6(x-9)+m(x-9)
1-64b24x2-36y2
0.49b2-361(6x+y)2-(6x-y)2
9-48a+64a2(a-b)2-6m(a-b)+9m2
9y2+60y+1009a2-6a(x+y)+(x+y)2
x2+12x+35x2-2x-35
4x2+22x+281-36n2
(2x3y)3•(-x2y2)2(a-b)(a+3b)
-2x(x-4)(x+5)(6x+3y-2)2
40.4×
39.659962
(8a)2•b2•16a2b2(x3y4+9x3y2z2)•x2y
2(x-3)2+(4x-4)(3x-3)(y+z)2-(4y+z)(3y-z)
25x2-y2(c-p)(x+3y)-(c-p)(x+y)
a2-20ay+100y225+50(m-b)+25(m-b)2
d3-16d81x4-1
50a3+30a4b16abc+100b2
10p(9+b)+12p(9+b)8(9+b)-m(9+b)
81-9y275x2-27y2
25m2-9(9x-4y)2-(x+7y)2
49+112y+64y2(a-b)2+6m(a-b)+9m2
49a2-98a+4916a2-8a(m-n)+(m-n)2
x2+16x+64x2-9x-10
12x2-43x+36100-16a2
(-2x3y3)3•(xy3)2(4a+6b)(6a-2b)
-3x(x-3)(x-3)(2x+4y+1)2
4.3×
3.759962
(3a)2•b4•20a2b2(7x4y4-x2y2z2)÷
x2y
3(x-1)2-(3x+3)(4x-5)(y+z)2-(4y-z)(4y+z)
x2-64y2(b+q)(6x+y)-(b+q)(x+4y)
a2+14ab+49b216-56(n-a)+49(n-a)2
b3-100b81x4-81
55a4-80a16a2bc+80bc
20p(y-9)-40q(y-9)4(y-9)+m(y-9)
64-9y24x2-100y2
0.16a2-9(2x-5y)2-(x-7y)2
25+50b+25b2(x+y)2-10m(x+y)+25m2
100y2+100y+2536a2-12a(a-b)+(a-b)2
x2-9x+18x2-6x-16
5x2-17x+6100-25b2
(3x2y)2•(-x2y3)3(a+b)(a-4b)
-3x(x+2)(x-5)(x+y+4)2
80.4×
79.63982
(7a)2•b3•16a2b(9x2y2+6x4y2z3)•6xy
2(x+1)2-(2x-4)(3x-1)(y+z)2-(4y-z)(4y+z)
x2-y2(a-m)(x+6y)+(a-m)(x-y)
a2+4ax+4x216-16(p+a)+4(p+a)2
b3-4b81x4-256
40a4-90a316a3b3c+90b
6p(8+b)-40p(8+b)8(8+b)+m(8+b)
81-25y23x2-27y2
16b2-400(x+4y)2-(8x-y)2
36-84n+49n2(x-y)2+8m(x-y)+16m2
16m2+32m+1616a2-8a(m+n)+(m+n)2
x2-5x+6x2-1x-30
6x2+12x+649-25n2
(-3xy2)2•(xy)3(6a+b)(a+5b)
-3x(x+5)(x+2)(4x-y-4)2
9.3×
8.75962
(6a)2•b2÷
20ab2(8x4y3-x4y3z2)•6x2y2
(x+1)2+(2x-3)(3x-2)(y+z)2-(4y+z)(4y-z)
9x2-y2(a+n)(3x+4y)-(a+n)(3x-5y)
a2+10ax+25x24-24(p-b)+36(p-b)2
d3-100dx4-16
100a-40a4b14ab3c+70b
20q(6-b)+40p(6-b)2(6-b)-m(6-b)
64-81m232x2-2y2
49m2-64(x-5y)2-(3x+7y)2
36-72n+36n2(m+n)2+6m(m+n)+9m2
64a2-80a+2525a2+10a(m+n)+(m+n)2
x2-8x+16x2+7x-8
4x2+20x+2516-9y2
(2x3y2)3•(x3y2)2(a-6b)(a-6b)
3x(x-1)(x+3)(x+y+4)2
8.4×
7.67022
(6a)3•b2•14ab(x2y4+x2y3z4)÷
x2y2
4(x+1)2-(4x+1)(4x-1)2(y-z)2-(3y+z)(4y-z)
81x2-81y2(n+b)(x-6y)-(n+b)(6x-4y)
a2-6ax+9x24+8(d-m)+4(d-m)2
b3-25bx4-81
95a3+70a212ab3c-40b
16p(4+b)-20p(4+b)4(4+b)-m(4+b)
9-25n275x2-48y2
0.81m2-1(x+5y)2-(x-10y)2
1+4b+4b2(a-b)2+10m(a-b)+25m2
25y2-90y+819a2+6a(a-b)+(a-b)2
x2+9x+20x2+5x-14
4x2-24x+2781-49x2
(-3xy3)2•(-xy)2(a-b)(3a+6b)
-3x(x-5)(x-3)(x-y+4)2
2.4×
1.65032
(9a)2•b4÷
10ab(3x3y3-x4y2z2)•8xy2
(x+4)2-(3x+3)(3x+4)(y-z)2+(3y+z)(2y-z)
9x2-49y2(c+p)(4x-4y)+(c+p)(5x-2y)
a2+12ay+36y24+24(b+p)+36(b+p)2
b3-9b16x4-1
40a3-10ab20abc+90b4
16q(y-3)+20q(y-3)4(y-3)-m(y-3)
16-64b218x2-50y2
16m2-196(5x-6y)2-(x+8y)2
4+40b+100b2(a+b)2-8m(a+b)+16m2
81m2-162m+819a2-6a(a+b)+(a+b)2
x2+8x+7x2-5x-6
9x2+45x+5481-100y2
(3x2y)3•(-x3y2)3(6a-5b)(4a+2b)
-3x(x+2)(x+5)(4x+5y-3)2
20.3×
19.759982
(8a)2•b4÷
20a2b(x3y3-x4y4z4)•xy2
(x-4)2+(3x+2)(3x+1)(y+z)2+(4y+z)(3y+z)
4x2-64y2(d-n)(3x-6y)+(d-n)(2x+3y)
a2-14ax+49x29+36(n+d)+36(n+d)2
a3-25ax4-81
95a3+20a2b16abc-100b4c
2p(y+5)-16q(y+5)4(y+5)-m(y+5)
16-64y248x2-75y2
36n2-196(4x-4y)2-(8x-7y)2
16-32x+16x2(a-b)2-8m(a-b)+16m2
49n2+98n+4916a2+8a(x-y)+(x-y)2
x2+11x+18x2+5x-36
12x2+37x+2849-16a2
(2x3y2)2•(xy3)2(a-3b)(a+b)
2x(x+3)(x-1)(6x-y-2)2
20.1×
19.94032
(2a)2•b2÷
20a2b(x3y4+2x4y4z2)÷
xy2
(x+2)2+(4x+5)(4x+2)(y-z)2-(4y+z)(4y+z)
x2-y2(m+a)(6x+y)+(m+a)(2x+y)
a2+6an+9n225+40(n+a)+16(n+a)2
b3-64bx4-256
80a3-60ab4abc-40b3
6q(7+b)+12p(7+b)6(7+b)-m(7+b)
36-36a264x2-36y2
25b2-121(x-y)2-(x+10y)2
9+54a+81a2(x+y)2+12m(x+y)+36m2
4n2-28n+494a2+4a(m+n)+(m+n)2
x2-12x+35x2-8x-20
6x2-42x+7216-49x2
(-2x3y2)2•(-xy)2(3a+3b)(a+6b)
3x(x-5)(x-4)(4x+4y-1)2
8.3×
7.750012
(5a)3•b4÷
12ab2(2x2y3-x3y3z2)÷
2xy
(x-1)2+(3x-2)(2x+3)(y+z)2+(4y+z)(4y-z)
x2-y2(q+b)(x-6y)+(q+b)(x+5y)
a2-18ab+81b24+24(m+a)+36(m+a)2
b3-4bx4-16
95a2-70a10ab3c-20b4c
10p(x-4)+40q(x-4)4(x-4)-m(x-4)
49-64m264x2-64y2
4y2-25(8x+y)2-(9x-y)2
9-24a+16a2(a-b)2+10m(a-b)+25m2
9a2+48a+649a2-6a(x+y)+(x+y)2
x2-8x+16x2-5x-14
12x2-22x+825-9n2
(-2xy2)3•(-x3y)2(a+b)(a-6b)
-2x(x+3)(x+5)(x+y+3)2
60.1×
59.96982
(7a)3•b2÷
10a2b(x3y4-2x3y3z3)÷
2(x+4)2-(2x+3)(2x+2)(y-z)2+(2y-z)(2y+z)
25x2-49y2(p+d)(3x-y)-(p+d)(3x-y)
a2+12ay+36y29+30(a+q)+25(a+q)2
c3-9cx4-256
10a-100a4a3b3c-100b
2q(x+6)+12p(x+6)8(x+6)+m(x+6)
16-9b23x2-12y2
0.04n2-100(7x+6y)2-(x+8y)2
64-64n+16n2(m-n)2+12m(m-n)+36m2
9n2+30n+2516a2+8a(m-n)+(m-n)2
x2-7x+10x2-8x-20
2x2+3x+19-16y2
(-3xy)3•(-x2y)2(a-b)(5a-b)
3x(x-4)(x-2)(x-4y-4)2
70.2×
69.8100032
(9a)2•b2•6a2b2(7x4y3-8x2y2z3)÷
2x2y
(x-3)2-(2x+4)(2x+5)(y+z)2+(2y-z)(2y-z)
64x2-y2(m+b)(x-y)-(m+b)(x-4y)
a2+14am+49m29+12(c-n)+4(c-n)2
d3-4dx4-81
40a+30a38ab3c-80b3c
8q(1-b)-36q(1-b)2(1-b)-m(1-b)
49-16x236x2-4y2
49n2-100(5x-y)2-(8x-y)2
4+8n+4n2(m-n)2-6m(m-n)+9m2
49b2+14b+136a2+12a(a-b)+(a-b)2
x2+14x+48x2-6x-40
15x2-68x+601-49m2
(-2xy2)3•(xy)3(a-2b)(a+b)
-3x(x+3)(x-3)(5x-2y+1)2
90.2×
89.819952
(3a)2•b2•12a2b2(4x2y2-6x3y2z2)÷
5x2y2
3(x+2)2+(2x-1)(2x-4)(y-z)2-(3y+z)(3y+z)
x2-100y2(m+a)(6x+y)+(m+a)(6x+y)
a2+4am+4m24-24(m-b)+36(m-b)2
b3-100b81x4-1
5a-90ab4ab3c-80b
14q(x+1)+32q(x+1)2(x+1)-m(x+1)
64-64n275x2-27y2
0.09n2-64(x+4y)2-(x+y)2
81+36a+4a2(m-n)2-12m(m-n)+36m2
100b2+20b+125a2-10a(a-b)+(a-b)2
x2-14x+48x2+5x-14
9x2+33x+2425-4b2
(-2xy)3•(-x2y)3(a+5b)(a-5b)
3x(x+1)(x+5)(6x+6y-3)2
5.2×
4.870002
4ab(5x4y4+x3y2z4)•xy2
3(x+1)2-(3x-3)(2x+5)4(y-z)2+(4y+z)(3y-z)
x2-y2(m-a)(x-y)-(m-a)(4x+y)
a2+10ax+25x236+48(c-p)+16(c-p)2
c3-49cx4-256
35a3+30a4b2abc+90b3c
2q(6+b)+20q(6+b)6(6+b)+m(6+b)
36-36x236x2-64y2
9b2-121(x+4y)2-(x-10y)2
1-18b+81b2(m+n)2+6m(m+n)+9m2
49n2-84n+3616a2+8a(a-b)+(a-b)2
x2-11x+18x2+8x-20
8x2-22x+1436-36b2
(-2x3y)3•(-xy2)2(3a+b)(a+6b)
2x(x+4)(x+2)(4x+4y+3)2
50.1×
49.999992
(4a)2•b3÷
4a2b(x4y2-x3y2z3)•xy2
(x+3)2-(3x+1)(3x+4)3(y-z)2+(3y-z)(4y-z)
16x2-100y2(q+b)(6x-y)-(q+b)(3x+y)
a2+10ab+25b24-8(a-n)+4(a-n)2
a3-81a16x4-81
20a-10a20abc+50bc
16q(5+b)-12p(5+b)4(5+b)-m(5+b)
49-81x24x2-64y2
49b2-81(x-y)2-(7x+10y)2
4-36x+81x2(x+y)2+12m(x+y)+36m2
64y2+96y+364a2+4a(x-y)+(x-y)2
x2-6x+5x2+4x-45
4x2-18x+81-100m2
(3xy)2•(-x2y3)3(a+3b)(a-5b)
-3x(x+1)(x-1)(x+3y+3)2
4.2×
3.85992
18a2b2(6x2y2-x2y4z2)÷
xy
(x-2)2-(2x-2)(2