人教版初二数学上册整式的乘法和因式分解练习题大全87Word文件下载.docx
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(3x3y)2•(xy2)2(3a-b)(5a-4b)
-3x(x-5)(x+5)(x+5y+4)2
1.1×
0.930032
(4a)3•b2÷
10ab(8x3y3+6x4y3z4)•xy
(x-2)2+(2x-4)(2x-2)4(y+z)2-(4y+z)(4y+z)
4x2-36y2(m+c)(5x+y)-(m+c)(x+3y)
a2+6ax+9x29+42(a+m)+49(a+m)2
a3-9a81x4-16
(-2x3y)2•(-x3y)3(a-4b)(a+4b)
-3x(x+5)(x-5)(2x-y+3)2
20.3×
19.729962
(5a)2•b3÷
2ab(3x3y4+9x3y4z2)÷
(x-3)2-(3x+2)(2x-3)2(y+z)2+(2y-z)(4y-z)
4x2-y2(n-b)(2x+y)+(n-b)(3x-y)
a2-12ay+36y216-16(q+b)+4(q+b)2
b3-9b16x4-16
(3x2y3)2•(x3y)2(a+b)(a-3b)
-3x(x+5)(x+4)(3x+y-1)2
20.1×
19.979952
(2a)2•b4÷
20ab(x3y3-3x4y4z2)÷
9xy
2(x+1)2+(3x-2)(2x+1)4(y-z)2+(2y-z)(4y+z)
16x2-49y2(q+c)(x+2y)-(q+c)(x+3y)
a2-12ax+36x225-20(c+m)+4(c+m)2
a3-25ax4-1
(-3x3y)3•(-x2y)3(a+3b)(a+5b)
-2x(x-1)(x+4)(x+6y+4)2
70.3×
69.76002
(2a)2•b2÷
20a2b(x2y2-9x2y4z2)•3x2y2
(x-1)2+(2x+4)(4x-1)4(y-z)2+(2y+z)(2y-z)
16x2-y2(b-n)(x-2y)-(b-n)(4x-y)
a2-14an+49n225+30(a-p)+9(a-p)2
a3-16ax4-1
(-2xy)2•(-x2y3)3(2a-6b)(a-b)
-3x(x+4)(x+5)(5x+y-3)2
90.3×
89.78052
(2a)2•b2•20ab2(x3y2-x3y3z2)•xy
3(x+4)2+(3x-3)(3x-3)(y+z)2-(4y-z)(4y+z)
x2-y2(q+b)(5x+y)+(q+b)(5x+y)
a2+16ab+64b24-24(d+m)+36(d+m)2
a3-36ax4-81
(-2xy)3•(xy2)3(a+3b)(2a-5b)
-3x(x+2)(x+1)(2x-6y+1)2
19.770002
(9a)2•b3•18a2b(6x3y2-x2y4z3)•x2y
4(x-1)2-(2x-5)(4x-2)(y-z)2-(4y-z)(2y-z)
x2-y2(b+n)(3x-2y)+(b+n)(6x-y)
a2+20an+100n225+50(q-c)+25(q-c)2
a3-49ax4-1
(-3xy2)3•(x3y)3(a+6b)(2a-2b)
-2x(x+5)(x-2)(x-y+2)2
2.4×
1.64032
(4a)3•b4÷
8ab(x3y3-3x3y4z3)•4xy2
(x+3)2+(4x+2)(3x+4)(y-z)2+(2y-z)(3y-z)
x2-64y2(c+n)(2x-y)+(c+n)(x+y)
a2-8ax+16x24+20(p-a)+25(p-a)2
d3-4dx4-256
(-2x2y2)2•(-xy3)3(3a-b)(5a-b)
-2x(x-4)(x+2)(2x+y-3)2
8.4×
7.66022
(4a)2•b2÷
8ab2(9x2y2+x3y3z4)•8x2y2
(x+1)2+(4x-1)(2x-5)2(y+z)2-(2y-z)(2y-z)
25x2-16y2(n+b)(x+2y)-(n+b)(5x-y)
a2-20ax+100x236-48(q-c)+16(q-c)2
a3-49ax4-16
(2xy)3•(xy)2(2a-2b)(a-5b)
2x(x+4)(x-5)(x+y-4)2
5.4×
4.63952
(4a)2•b4•20a2b(8x2y3+x4y4z2)÷
7xy2
4(x+2)2-(3x-4)(4x+3)4(y-z)2-(3y-z)(3y+z)
x2-64y2(d+q)(x+2y)-(d+q)(x+y)
a2+12ax+36x29-42(m+a)+49(m+a)2
c3-64cx4-1
(2xy3)3•(-xy3)2(a+b)(a-6b)
2x(x+5)(x+1)(3x-6y+1)2
3.1×
2.97002
(3a)2•b2•18a2b(9x2y3-4x2y4z3)•xy2
4(x-1)2+(2x+3)(2x-3)2(y+z)2+(3y+z)(3y-z)
9x2-y2(q+d)(x+3y)-(q+d)(x-2y)
a2-16ax+64x29+42(a+n)+49(a+n)2
c3-4c81x4-16
(-3x3y)3•(xy2)2(2a+3b)(a-4b)
-3x(x-5)(x+3)(x+5y+2)2
7.4×
6.66992
(9a)3•b4•8ab2(x3y4+x4y2z4)÷
xy2
3(x+3)2+(4x+4)(3x+3)2(y-z)2+(4y-z)(4y+z)
100x2-y2(n+b)(2x-2y)-(n+b)(6x+y)
a2-18am+81m24+12(m+a)+9(m+a)2
b3-81bx4-81
(2x3y3)3•(-x2y3)2(a-6b)(5a-b)
3x(x+5)(x-1)(5x+y+2)2
39.89012
(9a)3•b3÷
14a2b(8x4y4+2x2y4z4)•6x2y2
2(x-3)2+(3x+1)(2x-4)4(y+z)2+(4y+z)(4y-z)
36x2-y2(b-p)(x+4y)+(b-p)(4x+3y)
a2-18ax+81x225+70(p-d)+49(p-d)2
c3-64cx4-81
(-2xy2)3•(-x3y3)3(2a+b)(4a-b)
3x(x-3)(x+2)(6x-5y-3)2
4.2×
3.880032
(4a)3•b3÷
16ab(7x3y2-9x4y4z3)÷
x2y2
(x-3)2+(4x+3)(2x+2)3(y+z)2+(3y+z)(4y-z)
49x2-81y2(q+c)(x-y)+(q+c)(x+y)
a2-16ay+64y24-20(q-d)+25(q-d)2
c3-81cx4-1
(2xy)3•(x3y3)3(a+3b)(2a+b)
-3x(x+1)(x+5)(x+4y-3)2
40.1×
39.960012
(6a)3•b4÷
4a2b2(x3y3+x4y2z2)•x2y2
2(x-2)2-(4x-1)(3x-3)3(y+z)2-(3y+z)(3y-z)
25x2-25y2(c+n)(x+y)-(c+n)(5x+2y)
a2-16ab+64b29+42(d-p)+49(d-p)2
c3-100cx4-256
(-3x3y3)3•(-x3y)2(a-b)(a+b)
3x(x-1)(x+1)(x-3y-2)2
7.639992
(7a)2•b2•2ab(x3y2+x2y4z3)÷
(x-2)2+(3x+1)(2x+5)(y+z)2+(3y+z)(2y-z)
x2-4y2(q-b)(6x+2y)-(q-b)(4x-2y)
a2-12ay+36y24+8(q-d)+4(q-d)2
b3-64bx4-256
(-3xy2)2•(xy3)3(4a+b)(5a-b)
2x(x-3)(x-2)(x+2y-4)2
69.749982
(7a)2•b4÷
18a2b(3x4y3+4x2y4z2)•4x2y2
4(x+2)2+(4x+4)(2x-5)2(y+z)2-(4y-z)(4y-z)
36x2-y2(a-m)(3x-y)+(a-m)(x-5y)
a2-6ay+9y29-36(q-d)+36(q-d)2
a3-64ax4-256
(-2x2y3)3•(-xy2)3(a-6b)(5a+3b)
2x(x+5)(x-2)(x+y+2)2
30.4×
29.61992
(5a)3•b3•6a2b(x3y2+5x2y3z2)•x2y
3(x-1)2+(4x+3)(4x+3)(y+z)2-(3y+z)(2y-z)
x2-81y2(n+a)(x+y)-(n+a)(x+3y)
a2+20an+100n29-36(n-c)+36(n-c)2
d3-100dx4-256
(-3x2y2)2•(-xy2)3(4a+b)(6a+b)
-3x(x-3)(x+5)(6x-y-1)2
10.1×
9.979952
(7a)3•b4•6a2b(x3y2-x4y3z2)÷
xy
3(x+3)2-(2x-5)(4x+1)(y+z)2-(2y+z)(2y+z)
25x2-16y2(n+a)(4x-y)+(n+a)(x+y)
a2-12an+36n24+8(p+a)+4(p+a)2
c3-36c81x4-16
(2xy)3•(-xy2)3(5a-b)(6a+6b)
2x(x+3)(x-4)(4x+y+3)2
6.1×
5.999992
(7a)3•b4•16ab2(6x3y2+6x2y4z2)•xy
2(x+1)2-(4x-4)(3x+4)(y-z)2-(4y-z)(2y+z)
49x2-y2(c+n)(x+y)+(c+n)(x-4y)
a2+8ay+16y29-36(n-c)+36(n-c)2
(3xy)3•(-xy2)2(6a-b)(a+b)
2x(x+3)(x-4)(2x+2y+2)2
70.2×
69.82052
(6a)3•b2•10ab(8x3y2-5x4y2z4)•xy2
2(x-3)2-(3x-3)(3x-2)(y+z)2+(4y-z)(3y-z)
100x2-y2(m+d)(2x+5y)-(m+d)(x+y)
a2-6am+9m225-60(p+b)+36(p+b)2
c3-64cx4-256
(-3xy2)3•(xy)3(a-3b)(5a+b)
2x(x+4)(x-5)(4x-5y-4)2
2.2×
1.860012
(3a)3•b3÷
2ab(x3y4+x2y4z3)•6x2y
(x+3)2+(2x+4)(3x-4)(y-z)2+(3y+z)(2y-z)
x2-y2(p+d)(6x-y)-(p+d)(6x+y)
a2-14ay+49y236-60(c-q)+25(c-q)2
a3-100ax4-81
(3x2y)2•(xy3)3(a-b)(a-b)
3x(x+4)(x+4)(x-4y-4)2
4.1×
3.93022
(7a)2•b3•18ab(x4y4-x4y4z2)•xy
(x+3)2-(3x-1)(4x+1)3(y+z)2+(2y-z)(3y+z)
64x2-y2(d+p)(x-y)-(d+p)(6x-y)
a2-8an+16n216-16(b-p)+4(b-p)2
d3-36dx4-81
(-3x2y2)2•(-x2y3)3(a+5b)(4a+b)
3x(x-3)(x+2)(x-y+3)2
3.3×
2.74002
(2a)3•b2÷
18a2b(x2y4-4x3y4z2)÷
3(x-3)2-(2x-5)(4x+1)(y-z)2+(2y-z)(4y+z)
100x2-y2(a+p)(x-5y)+(a+p)(x-4y)
a2-16ay+64y29-24(a+q)+16(a+q)2
b3-36bx4-256