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78文档格式.docx
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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78文档格式.docx
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-3x(x+3)(x+4)(2x+y+1)2
80.4×
79.650052
(6a)2•b2•8a2b(x3y3+7x2y4z4)÷
2xy
(x+3)2+(4x-2)(2x-4)(y+z)2+(2y+z)(3y+z)
二、因式分解。
100x2-y2(q+b)(x-2y)+(q+b)(x-4y)
a2+12an+36n29+24(a+n)+16(a+n)2
d3-49dx4-16
80a2+10a4b18a2b3c-70b
8q(1+b)+4q(1+b)8(1+b)+m(1+b)
4-100b22x2-8y2
0.16m2-4(6x+y)2-(8x+7y)2
25-40b+16b2(a-b)2-4m(a-b)+4m2
100x2-60x+916a2-8a(m+n)+(m+n)2
x2+10x+21x2-7x-30
5x2-49x+729-4a2
(-3xy2)2•(xy)3(a+b)(a-2b)
3x(x-1)(x-4)(3x+5y-1)2
40.2×
39.87042
(4a)2•b4÷
10a2b2(4x2y3+2x4y4z2)÷
5xy2
2(x+2)2+(3x+4)(3x-1)(y-z)2+(2y-z)(2y-z)
x2-y2(p+a)(x+3y)+(p+a)(x+4y)
a2-6an+9n225-30(b-n)+9(b-n)2
b3-16b81x4-16
25a-70a2b12ab3c+10b
18q(6+b)+28p(6+b)8(6+b)+m(6+b)
9-16y227x2-3y2
25m2-361(x+y)2-(x+y)2
16+64n+64n2(x+y)2-10m(x+y)+25m2
4m2-36m+8136a2-12a(m+n)+(m+n)2
x2-8x+12x2-8x-20
9x2+30x+1625-25n2
(3x2y)3•(x2y3)3(4a-5b)(5a-3b)
-2x(x-2)(x+3)(6x-4y-2)2
6.3×
5.769952
(3a)3•b2•18a2b2(3x3y2-x3y3z2)÷
4xy2
(x-2)2-(4x+5)(3x-2)(y+z)2-(4y+z)(4y+z)
81x2-49y2(m+b)(6x+y)-(m+b)(3x-y)
a2+14ay+49y236-72(b+m)+36(b+m)2
d3-81d16x4-256
45a+10a18a4b2c+40b
4p(x+5)-36p(x+5)4(x+5)-m(x+5)
1-16m24x2-16y2
9b2-324(7x-y)2-(6x+7y)2
64-112m+49m2(a+b)2+10m(a+b)+25m2
81m2+54m+925a2+10a(x-y)+(x-y)2
x2+16x+64x2+2x-35
8x2-38x+42100-49a2
(2x2y3)2•(-xy3)3(2a+b)(a+6b)
3x(x-4)(x-4)(4x+y+1)2
39.810032
(5a)3•b4•8ab(4x4y4-x2y3z2)÷
6x2y2
(x-2)2+(2x+1)(3x+4)(y-z)2-(2y+z)(2y-z)
25x2-64y2(m+a)(4x+2y)+(m+a)(x+6y)
a2-8ab+16b216-16(a+p)+4(a+p)2
a3-36ax4-1
100a+10a34abc-50b3c
16q(x+1)-16p(x+1)4(x+1)+m(x+1)
16-64a216x2-64y2
0.16y2-196(9x-y)2-(x-y)2
36+36b+9b2(x-y)2+4m(x-y)+4m2
16y2-48y+3616a2-8a(m-n)+(m-n)2
x2-13x+42x2-4x-21
8x2+36x+4025-4x2
(3x2y)2•(-x2y)3(6a-b)(a-5b)
2x(x+1)(x-4)(3x-2y+4)2
9.1×
8.990032
(2a)2•b3÷
2a2b2(5x4y3-9x3y4z4)•x2y2
(x-1)2+(3x+4)(2x-4)4(y+z)2-(4y+z)(4y-z)
49x2-y2(a-n)(3x+4y)+(a-n)(x-y)
a2+20am+100m29-18(a-n)+9(a-n)2
d3-25dx4-16
40a2-10ab16ab3c+70b
4q(x+8)+8q(x+8)6(x+8)-m(x+8)
1-36m22x2-50y2
0.09b2-49(x-2y)2-(8x+8y)2
1-14n+49n2(x-y)2+10m(x-y)+25m2
64x2-128x+644a2+4a(x-y)+(x-y)2
x2-10x+21x2+8x-20
2x2+21x+5464-64x2
(3xy)3•(-xy)3(a+3b)(5a-b)
3x(x+5)(x-5)(2x+6y+1)2
2.1×
1.989972
(5a)2•b3÷
2ab2(2x2y3+2x3y4z4)÷
2xy2
3(x-3)2+(3x-2)(4x-4)(y-z)2-(4y+z)(3y+z)
64x2-100y2(p+c)(x-3y)+(p+c)(x-5y)
a2-8ay+16y236+48(d-m)+16(d-m)2
b3-16bx4-1
65a-60ab10abc-40b
18q(8+b)-36p(8+b)4(8+b)-m(8+b)
9-49m216x2-4y2
0.16n2-256(4x-6y)2-(x+10y)2
16+72y+81y2(x-y)2-6m(x-y)+9m2
25y2-40y+169a2-6a(a+b)+(a+b)2
x2-17x+72x2+2x-35
3x2+28x+6049-81y2
(2xy3)2•(xy3)3(a+4b)(5a+b)
-2x(x-3)(x-4)(x+y-3)2
39.849992
(3a)3•b2•18a2b(4x2y4-x3y3z4)•9xy
(x-3)2-(3x-4)(2x+4)4(y+z)2+(3y-z)(2y+z)
x2-36y2(m+b)(2x+y)+(m+b)(6x-5y)
a2-10ax+25x216+32(a+n)+16(a+n)2
a3-64a16x4-256
100a2-60ab12ab3c-30b3
18q(y+3)-4p(y+3)8(y+3)-m(y+3)
36-4n218x2-50y2
36a2-144(9x+2y)2-(x-y)2
16+32x+16x2(a+b)2+8m(a+b)+16m2
49b2-84b+3636a2+12a(m-n)+(m-n)2
x2-17x+72x2+7x-30
9x2+33x+1036-36y2
(3xy3)2•(xy)3(a-b)(a-6b)
3x(x-2)(x-4)(x+6y-4)2
7.2×
6.819992
(9a)3•b3÷
20a2b2(9x2y4-6x2y4z2)•9x2y
(x+2)2+(3x-1)(4x-1)3(y-z)2+(3y-z)(2y+z)
x2-y2(d+q)(x-y)-(d+q)(6x-y)
a2-6ax+9x29+24(d-p)+16(d-p)2
d3-25d16x4-1
55a+60ab14abc+40b4c
18p(x+6)-32p(x+6)
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