人教版初二数学上册整式的乘法和因式分解练习题大全70Word格式.docx
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-2x(x-2)(x+2)(x+y+2)2
4.3×
3.73952
(2a)2•b3÷
12ab(x4y2+4x4y3z3)÷
x2y
(x+2)2+(4x+2)(2x+5)3(y-z)2-(2y-z)(2y+z)
16x2-y2(q-d)(6x-y)-(q-d)(4x-y)
a2+16ay+64y236-48(q+b)+16(q+b)2
b3-36bx4-16
(3x2y3)2•(-xy2)3(a-4b)(a+b)
-3x(x-2)(x+1)(4x-2y-1)2
30.4×
29.61032
(9a)3•b2•14a2b(x2y2+x3y2z3)•x2y
(x-2)2-(2x+5)(2x+5)2(y+z)2-(4y+z)(2y+z)
x2-4y2(a+p)(x+6y)+(a+p)(x+y)
a2-8ay+16y24+16(c-n)+16(c-n)2
a3-16ax4-1
(3xy3)3•(-xy2)2(a+5b)(4a-6b)
-3x(x-3)(x-5)(x+2y-3)2
2.4×
1.65972
(6a)2•b3•12ab(x3y3+x2y3z2)÷
xy
4(x-1)2+(3x+4)(4x-1)3(y-z)2+(3y-z)(4y+z)
16x2-36y2(n+d)(x+y)+(n+d)(5x+y)
a2+10ax+25x236-72(q+a)+36(q+a)2
a3-25a16x4-256
(2xy)3•(-x2y)2(2a+b)(2a-5b)
-3x(x+2)(x-5)(5x-y-4)2
7.3×
6.7972
(2a)2•b4•4a2b2(x3y3-3x4y2z2)÷
5xy
4(x+2)2-(2x+2)(4x+5)(y+z)2-(4y+z)(2y-z)
x2-9y2(d+q)(6x+y)-(d+q)(6x-y)
a2+8an+16n236-84(q+b)+49(q+b)2
c3-16c16x4-81
(3xy)2•(-xy)3(2a+5b)(2a-6b)
-2x(x+3)(x+1)(x+2y-4)2
40.2×
39.83992
(6a)3•b2÷
18ab(7x4y3+x2y3z3)•xy
(x+3)2+(3x-1)(2x-1)4(y-z)2-(3y-z)(2y+z)
4x2-y2(b-m)(x+5y)-(b-m)(x-y)
a2+20am+100m225-50(d-p)+25(d-p)2
b3-49b16x4-1
(-2xy2)2•(-x2y2)3(a+b)(6a+b)
-2x(x-1)(x+2)(x-4y-4)2
4.2×
3.8100052
(4a)3•b3÷
18a2b(6x3y2-x2y3z4)•2xy
(x+4)2-(3x+5)(3x-4)4(y-z)2+(2y+z)(2y-z)
x2-y2(n-a)(3x-2y)+(n-a)(x+2y)
a2-20an+100n236+72(p+a)+36(p+a)2
b3-64b81x4-16
(-3x3y)2•(x3y2)2(a-4b)(5a-b)
-2x(x+1)(x+2)(4x-y-1)2
6.1×
5.910052
(4a)2•b2•10ab2(8x4y4-x4y4z3)÷
2(x+1)2-(4x+2)(4x-5)(y-z)2+(2y+z)(2y-z)
64x2-49y2(n+c)(x-y)+(n+c)(x+y)
a2-8ab+16b24-16(b-q)+16(b-q)2
c3-9cx4-16
(-2x3y)3•(-xy)2(3a-3b)(a-b)
3x(x-3)(x+3)(3x-5y-2)2
30.2×
29.839992
(6a)2•b3•14ab2(x3y2+7x3y2z4)÷
3xy2
(x+1)2-(4x-2)(4x-4)(y-z)2+(3y+z)(4y+z)
100x2-16y2(b-n)(x-4y)-(b-n)(x+y)
a2+10ay+25y29+36(b-p)+36(b-p)2
d3-25dx4-1
(3x3y3)3•(x2y)2(a+b)(3a+6b)
2x(x-4)(x-2)(x-y-3)2
3.78022
(6a)2•b2÷
20ab2(6x4y4-8x2y4z4)÷
9xy2
(x-2)2+(4x+2)(3x-4)3(y+z)2-(2y-z)(3y+z)
x2-y2(q+d)(x-3y)-(q+d)(5x-y)
a2-12ay+36y29-36(b-p)+36(b-p)2
c3-49cx4-81
(-3x2y2)2•(-x3y3)2(a-6b)(4a+2b)
2x(x-5)(x-5)(2x+y-1)2
39.810052
(3a)2•b2÷
14a2b2(5x3y3-x3y2z4)•8x2y2
2(x+3)2+(2x-2)(2x+4)4(y-z)2-(4y+z)(2y-z)
25x2-36y2(q+b)(x+4y)-(q+b)(6x-2y)
a2+4ay+4y29+18(m-c)+9(m-c)2
c3-64cx4-256
(-2x3y)2•(-xy2)3(4a+b)(5a-b)
3x(x+1)(x+1)(x-y+2)2
30.3×
29.749952
(7a)2•b2•6ab(x4y4+7x4y3z3)•4x2y2
4(x-3)2+(4x+4)(4x-3)(y+z)2+(3y-z)(4y-z)
x2-y2(n+a)(x+y)+(n+a)(6x+6y)
a2-14ay+49y24-8(b+p)+4(b+p)2
c3-9c81x4-256
(3x2y)2•(-xy)3(6a-b)(6a+4b)
-2x(x+2)(x-5)(4x-6y-4)2
60.2×
59.85042
(2a)3•b2÷
4ab(4x4y2-5x3y2z3)•8xy
4(x-1)2+(3x-3)(4x+3)(y+z)2-(2y-z)(4y+z)
49x2-y2(q-a)(3x-y)+(q-a)(x-y)
a2-12ax+36x236+72(d+m)+36(d+m)2
d3-100dx4-81
(-2x2y2)3•(xy)2(4a+2b)(a+6b)
-3x(x+4)(x-4)(x+6y+2)2
70.2×
69.81952
(5a)2•b4•12ab(x3y2+x4y4z2)÷
2xy2
2(x-1)2-(4x+3)(2x-3)(y-z)2+(3y-z)(3y+z)
16x2-y2(a-p)(x+y)-(a-p)(6x+2y)
a2+18am+81m24+8(p+b)+4(p+b)2
d3-49dx4-16
(3x2y)2•(-x2y2)3(a+2b)(6a+6b)
2x(x-1)(x+1)(x-6y-1)2
40.3×
39.73972
(5a)2•b3•12ab(2x3y4+3x4y2z3)÷
4(x+1)2+(4x-4)(2x+4)3(y+z)2+(4y+z)(4y+z)
x2-81y2(d-m)(2x-3y)-(d-m)(5x-4y)
a2-12an+36n216+56(n+d)+49(n+d)2
b3-25bx4-16
(3x2y)3•(-x2y2)3(a-b)(4a+b)
3x(x-4)(x-1)(x+y+1)2
7.1×
6.9972
(2a)3•b3÷
14ab(4x2y2+x3y4z4)•8xy2
(x+4)2+(2x+4)(4x-1)3(y-z)2+(2y+z)(2y-z)
4x2-y2(a-m)(4x-2y)+(a-m)(2x+4y)
a2-4am+4m225-60(m+c)+36(m+c)2
b3-100bx4-1
(2x3y)3•(-xy)2(a-5b)(2a-b)
3x(x-2)(x+1)(4x+y-1)2
3.1×
2.93022
(3a)3•b3÷
6a2b(x3y3+5x4y3z2)÷
(x-3)2+(2x-4)(3x-2)(y+z)2+(2y-z)(2y-z)
x2-4y2(d+p)(x-y)-(d+p)(x+4y)
a2-18an+81n216-16(n+d)+4(n+d)2
a3-49ax4-16
(-3x3y2)2•(-x2y3)2(a-b)(a+b)
-2x(x+3)(x+3)(2x-y-1)2
5.3×
4.79952
(8a)3•b4•14ab2(x3y4-x4y2z3)•x2y
4(x+4)2-(2x+4)(4x+1)(y+z)2-(2y+z)(2y+z)
x2-49y2(b+m)(x-y)+(b+m)(x+5y)
a2+18ax+81x216+48(b-q)+36(b-q)2
b3-16bx4-1
(-3xy)2•(xy2)2(a-b)(6a+b)
-3x(x-5)(x-1)(4x+y+3)2
90.1×
89.959992
(7a)2•b3•12ab(x3y4-x2y4z3)÷
6x2y
4(x-4)2-(4x+4)(4x-4)(y-z)2+(2y-z)(3y+z)
36x2-36y2(n+c)(x+y)-(n+c)(x-y)
a2-6ay+9y236+48(q-a)+16(q-a)2
b3-81bx4-81
(-3x2y)3•(xy)3(4a+b)(a-4b)
-3x(x+4)(x+4)(4x+y+1)2
3.74032
(2a)3•b2•8ab2(8x3y2+x2y4z3)÷
x2y2
4(x+4)2-(2x+1)(2x-3)2(y-z)2-(2y-z)(3y-z)
x2-4y2(p+a)(2x+2y)+(p+a)(x-y)
a2+6an+9n216+48(c+q)+36(c+q)2
c3-4cx4-16
(-3xy)2•(xy)3(a+5b)(2a+6b)
-3x(x+5)(x-3)(x-y-3)2
10.2×
9.880002
(2a)3•b2•20a2b2(x2y2+x2y4z2)•x2y2
(x-1)2-(2x-4)(3x-4)3(y+z)2-(3y-z)(4y+z)
x2-y2(d+n)(5x-3y)+(d+n)(x+5y)
a2+12ay+36y29+18(c-p)+9(c-p)2
c3-49cx4-16
(2x2y2)3•(x3y)2(a-3b)(a-b)
2x(x+1)(x+1)(x+5y-4)2
9.8982
(8a)3•b2•4a2b2(x3y3+x3y4z4)÷
4xy2
2(x-2)2+(2x-5)(3x-1)4(y-z)2+(4y+z)(2y-z)
x2-y2(d+p)(x+y)-(d+p)(2x+5y)
a2+16am+64m225-50(q+c)+25(q+c)2
a3-100a16x4-1
(3x3y)2•(x2y)2(3a-b)(a-2b)
3x(x+1)(x+3)(x-5y-3)2
4.4×
3.64972
(4a)2•b4•6ab2(x2y3+x2y3z4)÷
(x-3)2-(4x-4)(2x-1)3(y+z)2+(3y+z)(3y-z)
64x2-4y2(b+n)(x+4y)-(b+n)(x+5y)
a2+4an+4n29-36(p+b)+36(p+b)2
a3-25ax4-81
(-2x3y2)2•(-xy3)3(a-b)(3a-b)
2x(x-2)(x+4)(x+y-2)2
1.1×
0.930002
(4a)3•b3•2a2b(x3y4+4x3y3z4)÷
(x+2)2+(2x+4)(2x+4)(y-z)2-(3y-z)(2y-z)
49x2-9y2(q-b)(x+2y)+(q-b)(4x+y)
a2-4ax+4x225-20(c-p)+4(c-p)2
c3-16c81x4-256