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70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70文档格式.docx
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a2-20am+100m29-42(d+q)+49(d+q)2
b3-81b81x4-1
75a+70ab6a2bc-90b3
2p(y-4)+24q(y-4)8(y-4)-m(y-4)
9-81b275x2-48y2
25y2-361(5x-3y)2-(x+7y)2
49-42x+9x2(x+y)2+8m(x+y)+16m2
81y2-126y+4916a2+8a(a-b)+(a-b)2
x2-10x+25x2+7x-30
3x2+30x+6349-36a2
(3x3y3)3•(-x3y3)2(3a-2b)(4a+b)
3x(x+1)(x+5)(x-y-3)2
6.2×
5.839952
(5a)2•b3÷
6a2b2(7x3y3-7x4y3z3)•3xy
3(x-1)2+(2x+3)(4x+1)3(y-z)2-(2y-z)(2y-z)
4x2-81y2(p+c)(x+4y)-(p+c)(2x+y)
a2-8am+16m24+8(m+a)+4(m+a)2
b3-9bx4-1
55a+90ab2ab2c+100b
4q(9-b)-16q(9-b)2(9-b)+m(9-b)
81-49x250x2-50y2
81x2-9(4x+2y)2-(x-y)2
81+126x+49x2(x-y)2+4m(x-y)+4m2
64m2-64m+1616a2-8a(a+b)+(a+b)2
x2-18x+81x2-4x-45
8x2+48x+4064-64a2
(-2x2y3)2•(x3y3)3(4a-2b)(a+5b)
3x(x+3)(x-3)(x-y+4)2
90.2×
89.88032
(8a)2•b2÷
6ab2(4x3y4+x3y4z4)÷
5xy
4(x+1)2-(4x+4)(2x-2)2(y+z)2+(4y-z)(3y+z)
81x2-y2(b-q)(6x-6y)-(b-q)(4x+2y)
a2-20ax+100x24-16(a-p)+16(a-p)2
c3-49cx4-1
80a3+40a20a2bc+50b
8q(y+6)+4q(y+6)8(y+6)+m(y+6)
100-81b264x2-100y2
0.81x2-169(x-y)2-(x-y)2
4-24n+36n2(m+n)2+6m(m+n)+9m2
36a2+96a+6436a2-12a(m-n)+(m-n)2
x2-15x+54x2+6x-27
4x2+28x+4036-4x2
(2xy)2•(xy3)2(4a-4b)(a+b)
-3x(x+1)(x+3)(x+5y-3)2
50.2×
49.839972
(5a)2•b2•2ab2(x4y2-8x4y2z3)÷
3x2y2
2(x-3)2-(2x-2)(3x-5)(y+z)2-(4y+z)(4y-z)
9x2-y2(b+n)(5x+3y)+(b+n)(x-3y)
a2+16am+64m225-50(a-p)+25(a-p)2
c3-81c81x4-16
5a4-60a14a3bc-10b2
2p(8-b)+12p(8-b)8(8-b)-m(8-b)
100-4a28x2-32y2
0.49m2-289(7x-y)2-(x+y)2
64-96y+36y2(x-y)2-4m(x-y)+4m2
4b2-40b+1004a2-4a(a+b)+(a+b)2
x2-9x+18x2+5x-6
15x2-50x+4025-25n2
(-2x2y3)3•(xy)3(2a-5b)(a-b)
3x(x+4)(x+1)(x+y-1)2
60.2×
59.82972
(7a)3•b2÷
12a2b(x2y4+x2y3z4)•x2y
2(x+1)2+(3x-5)(4x-3)4(y+z)2+(4y+z)(4y+z)
25x2-25y2(b+m)(x+2y)-(b+m)(6x-4y)
a2+8am+16m29-24(n-c)+16(n-c)2
d3-49dx4-1
85a3-20ab16a2bc+60b3
10p(x+5)+20q(x+5)2(x+5)-m(x+5)
49-49m24x2-4y2
0.16n2-49(x-4y)2-(4x+7y)2
25-80b+64b2(m-n)2+6m(m-n)+9m2
9a2-42a+4936a2-12a(a+b)+(a+b)2
x2-12x+32x2+5x-50
8x2-18x+104-9n2
(2x2y3)3•(-x3y)3(3a-b)(a-b)
-3x(x+4)(x+3)(6x+3y-1)2
9.2×
8.810022
(6a)2•b4•20a2b(9x4y4+8x3y3z2)•4xy2
(x-2)2-(4x+1)(2x+4)(y-z)2-(4y+z)(3y-z)
36x2-100y2(m+a)(3x+6y)-(m+a)(x-6y)
a2-18ab+81b225+40(m-b)+16(m-b)2
d3-9d16x4-81
80a2+10a2b14abc-80b
6p(5+b)+40p(5+b)6(5+b)-m(5+b)
36-64x250x2-2y2
25b2-169(7x-y)2-(x-y)2
64+48b+9b2(x-y)2+8m(x-y)+16m2
36x2+96x+6416a2-8a(x+y)+(x+y)2
x2-14x+49x2-7x-8
5x2-51x+544-100b2
(3xy)3•(-x2y)3(3a-b)(6a+b)
-2x(x-5)(x-4)(2x+y-4)2
4.2×
3.83022
(3a)2•b2•20a2b(x4y3-7x4y4z3)•6xy
(x+1)2-(4x+1)(4x+1)4(y-z)2+(3y-z)(3y+z)
100x2-36y2(n+d)(x-y)+(n+d)(x-5y)
a2-18ay+81y236+84(c-p)+49(c-p)2
b3-16b81x4-16
55a4+90a2ab3c-30bc
8q(3-b)+32q(3-b)4(3-b)-m(3-b)
36-9a227x2-48y2
25m2-169(9x-2y)2-(3x-10y)2
81-36a+4a2(a+b)2+8m(a+b)+16m2
64y2-128y+649a2-6a(x-y)+(x-y)2
x2-17x+72x2+4x-21
15x2-75x+909-36x2
(3xy)2•(xy)3(6a+3b)(a+5b)
-2x(x-2)(x-4)(x-3y+2)2
80.1×
79.979982
(7a)3•b3•2a2b2(x3y2+x4y4z3)÷
xy
2(x-4)2+(2x+4)(2x-5)(y-z)2-(3y+z)(3y-z)
x2-36y2(m-d)(2x-y)+(m-d)(x-5y)
a2-8ab+16b225-70(q+c)+49(q+c)2
35a+20a2ab3c-60b4c
20q(y-3)-32q(y-3)4(y-3)-m(y-3)
1-9y23x2-12y2
0.16y2-9(3x-y)2-(x+9y)2
1+12m+36m2(m-n)2-6m(m-n)+9m2
36b2-108b+814a2+4a(m-n)+(m-n)2
x2-9x+20x2-4x-21
8x2+20x+84-4b2
(-2x2y2)2•(x3y)2(2a+b)(2a-2b)
-2x(x+1)(x-2)(5x-y-2)2
3.3×
2.78962
(3a)3•b4÷
6ab2(5x2y4+x4y3z2)•7x2y
4(x+2)2-(3x+3)(4x-1)(y-z)2+(4y+z)(2y-z)
64x2-y2(c+p)(x+2y)-(c+p)(x-y)
a2-16ay+64y24+16(a+q)+16(a+q)2
c3-4cx4-1
90a-20a4b18a2b3c+90bc
2q(y-5)+12q(y-5)2(y-5)-m(y-5)
4-64m23x2-48y2
64y2-81(2x+4y)2-(6x-9y)2
36-60x+25x2(m-n)2-12m(m-n)+36m2
49m2+42m+94a2-4a(m+n)+(m+n)2
x2+9x+14x2-8x-9
16x2-56x+48100-64a2
(-2xy)2•(-x3y2)2(a-4b)(6a-6b)
-2x(x+3)(x+2)(3x+y-2)2
3.2×
2.8100032
(6a)3•b4•14a2b2(8x3y2-6x4y4z2)÷
x2y
4(x+4)2+(4x+2)(2x+5)3(y+z)2+(2y+z)(4y+z)
x2-25y2(p+c)(x+y)+(p+c)(x-2y)
a2-20ay+100y216+24(a+m)+9(a+m)2
b3-25bx4-81
25a-10ab12abc+100b2
18p(x+3)-28q(x+3)6(x+3)-m(x+3)
81-25y2100x2-4y2
0.16m2-361(x+4y)2-(x-9y)2
64-48m+9m2(a+b)2-10m(a+b)+25m2
25n2-10n+14a2-4a(m+n)+(m+n)2
x2-11x+30x2+2x-24
3x2-25x+4264-16n2
(-2x3y)2•(-x2y)3(3a-4b)(a+2b)
-3x(x-2)(x+5)(4x-y-3)2
4.4×
3.650012
(5a)2•b2•18a2b(x4y4+2x3y3z3)•6x2y
4(x+3)2+(3x-2)(2x+4)3(y+z)2+(2y-z)(4y+z)
x2-y2(m+c)(2x-y)-(m+c)(x+6y)
a2+18an+81n236-36(d-n)+9(d-n)2
c3-64cx4-256
15a2+40a38a3bc-30b3
12q(8+b)-36q(8+b)2(8+b)-m(8+b)
64-64x232x2-50y2
0.36n2-400(4x-y)2-(x+y)2
64-144y+81y2(a+b)2-10m(a+b)+25m2
16y2+72y+814a2+4a(m+n)+(m+n)2
x2-11x+30x2-4x-45
12x2-7x+19-25x2
(-2x2y)3•(-xy2)3(5a+b)(a+b)
-2x(x+3)(x+5)(2x+y-4)2
7.2×
6.81992
(6a)3•b2÷
12ab(4x2y3+5x3y4z3)÷
4x2y2
(x+2)2+(2x+2)(4x-1)(y-z)2+(2y+z)(3y+z)
49x2-4y2(m+a)(x+y)+(m+a)(5x-3y)
a2-4am+4m225+30(n-d)+9(n-d)2
a3-81a81x4-256
95a2+60ab2abc+90b2
20p(y-5)-32p(y-5)6(y-5)+m(y-5)
9-9n23x2-27y2
36x2-196(5x-y)2-(6x-8y)2
9-18m+9m2(a+b)2-10m(a+b)+25m2
4a2+24a+364a2+4a(m-n)+(m-n)2
x2+7x+12x2-5x-24
2x2+30x+10025-25n2
(3xy)3•(-x2y3)3(a+2b)(5a+b)
2x(x+5)(x+2)(x+y-2)2
20.4×
19.679992
(2a)3•b4÷
8ab2(x3y2-7x3y2z3)÷
x2y2
(x-2)2+(3x+1)(3x-1)3(y-z)2-(4y-z)(4y+z)
x2-y2(q-a)(x+4y)-(q-a)(3x-y)
a2+14ay+49y24+8(n+d)+4(n+d)2
b3-16bx4-256
70a3+40a4b14ab2c+60b2
4q(y-1)-8p(y-1)4(y-1)-m(y-1)
64-9b216x2-36y2
36a2-81(x+5y)2-(8x+y)2
100-160n+64n2(x-y)2+6m(x-y)+9m2
49y2-84y+364a2+4a(m+n)+(m+n)2
x2+6x+9x2+8x-20
6x2-41x+6316-49a2
(-2xy2)2•(x2y3)2(3a+5b)(6a+6b)
-2x(x-5)(x+1)(x+y+2)2
20.1×
19.96002
(6a)3•b3•4a2b(8x2y4+9x4y4z2)•5xy2
(x+4)2+(2x+5)(2x+4)(y+z)2-(4y+z)(4y+z)
100x2-64y2(c-m)(x+4y)+(c-m)(3x+6y)
a2-10an+25n24-20(n+b)+25(n+b)2
c3-9c81x4-16
40a4+30a44a4bc-20bc
6p(y+2)-20q(y+2)2(y+2)+m(y+2)
36-4a218x2-50y2
0.16b2-16(x-6y)2-(x-7y)2
100+60x+9x2(a-b)2+10m(a-b)+25m2
25x2+100x+10016a2+8a(m-n)+(m-n)2
x2+14x+45x2+5x-14
8x2-28x+2425-16x2
(3xy)3•(x2y2)3(a+b)(a-4b)
3x(x-1)(x-1)(x+3y-4)2
1.1×
0.99962
(6a)3•b3•4a2b2(x3y4-8x4y4z2)•5x2y
3(x+1)2+(4x-5)(2x+3)(y-z)2+(3y-z)(4y-z)
x2-25y2(b-p)(x-2y)-(b-p)(6x-y)
a2+6ab+9b29-42(c-p)+49(c-p)2
c3-16cx4-1
95a3+50ab2abc-50b
20q(4-a)-28p(4-a)4(4-a)+m(4-a)
64-4n2100x2-100y2
0.25b2-36(x-y)2-(4x-y)2
81-162n+81n2(x+y)2-4m(x+y)+4m2
9m2-24m+164a2-4a(m-n)+(m-n)2
x2-11x+28x2+4x-12
5x2-42x+4981-100x2
(-3x3y2)3•(x2y2)3(a+3b)(a+b)
2x(x+5)(x-5)(4x+y-2)2
40.4×
39.680042
(2a)2•b2÷
16a2b2(2x3y2+3x2y3z3)•xy
(x-1)2+(2x-3)(3x-2)(y-z)2+(2y-z)(3y+z)
x2-81y2(b+p)(4x+2y)+(b+p)(5x+3y)
a2+8ay+16y29+42(d-p)+49(d-p)2
c3-36c16x4-81
90a3+40ab12a
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