初一下册完全平方公式专项训练21.docx
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初一下册完全平方公式专项训练21.docx
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初一下册完全平方公式专项训练21
(4a+b+4)(4a+b-4)(x+y-2)(x+y+2)
(x+1)(x-1)+(x+5)(x-3)6962
(x-y)2-4(x-y)(x+2y)2(a-3b)2
11
(—x-—y)29992(3x+2)2+2x2
69
1
(3xy+—x)26022(2n-3)2-5n2
4
(7x+6)2(3x+6y)2(mn-6a)2
1
(—x+2y)2(5ab+2)2(2n-1)2-7n2
4
11
(—m+—)2(-9t-8)25042
64
1
(-6cd-—)23962(a-b-d)2
5
(4a+b+3)(4a+b-3)(2x-y-4)(2x-y+4)
(x+1)(x-1)-(x+5)(x-3)4992
(5x+y)2+4(x+y)(x+3y)2(2a+b)2
11
(—x+—y)24962(4x-10)2+4x2
58
1
(4xy-—x)22052(4n-1)2+7n2
6
(7x+3)2(4x+5y)2(bc-6a)2
1
(—x-6y)2(ab-6)2(4n-5)2-8n2
6
11
(—m-—)2(-5t+10)29062
56
1
(-5cd-—)26942(2a-b-d)2
6
(a+b+2)(a+b-2)(4x+y-3)(4x+y+3)
(x+3)(x-3)-(x+5)(x-1)8972
(5x-y)2+(x+y)(x-3y)2(a+b)2
11
(—x+—y)28972(2x+7)2-x2
42
1
(2xy+—x)28082(2n+2)2-n2
5
(x+5)2(3x-2y)2(bc+2a)2
1
(—x+y)2(9ab-6)2(4n-3)2-7n2
2
11
(—m-—)2(-8t-5)24032
66
1
(-2cd+—)28922(3a+b-d)2
5
(3a+b+3)(3a+b-3)(3x+y-2)(3x+y+2)
(x+3)(x-3)+(x-3)(x+4)982
(6x-y)2-3(x+y)(x-3y)2(2a+3b)3
11
(—x-—y)21942(3x-7)2-x2
22
1
(6xy-—x)27042(4n-5)2+4n2
2
(3x-4)2(8x-5y)2(ab-3a)2
1
(—x+5y)2(7ab+1)2(2n+1)2+10n2
6
11
(—m-—)2(-8t+5)21082
64
1
(-5cd-—)29912(2a-b+d)2
5
(4a+b+4)(4a+b-4)(x+y-1)(x+y+1)
(x+2)(x-2)+(x-4)(x-2)9952
(5x+y)2-2(x-y)(x-4y)2(2a+3b)3
11
(—x+—y)29912(x-9)2+9x2
59
1
(3xy-—x)21092(2n-2)2+2n2
3
(7x-3)2(3x-5y)2(xy+3a)2
1
(—x+5y)2(5ab+8)2(4n+1)2-9n2
3
11
(—m+—)2(-5t+6)26042
26
1
(-2cd-—)2942(a+b+d)2
2
(2a+b+4)(2a+b-4)(3x+y-5)(3x+y+5)
(x+4)(x-4)-(x-3)(x+1)2982
(3x+y)2-4(x+y)(x+4y)2(2a-b)3
11
(—x+—y)25932(4x+9)2-6x2
52
1
(2xy-—x)23022(5n-1)2+3n2
3
(6x-7)2(6x-y)2(ab-5a)2
1
(—x+3y)2(6ab-1)2(n+2)2+4n2
3
11
(—m-—)2(-4t-3)29022
33
1
(-3cd-—)24942(a+b-d)2
3
(3a+b+2)(3a+b-2)(2x-y-2)(2x-y+2)
(x+2)(x-2)+(x+4)(x+1)942
(2x+y)2+4(x-y)(x+2y)2(2a-b)2
11
(—x-—y)2972(9x+2)2-3x2
59
1
(5xy+—x)21082(4n-3)2+n2
3
(9x+10)2(7x+4y)2(bc-3a)2
1
(—x-5y)2(9ab+2)2(5n+2)2-10n2
6
11
(—m-—)2(-6t+7)23022
52
1
(-3cd+—)24942(2a+b-d)2
5
(4a-b+4)(4a-b-4)(x-y-2)(x-y+2)
(x+4)(x-4)+(x+3)(x+5)9982
(2x+y)2+3(x-y)(x-4y)2(2a-b)2
11
(—x-—y)29972(5x+5)2-x2
62
1
(2xy-—x)22032(5n+5)2-8n2
5
(2x-9)2(7x+y)2(bc-4a)2
1
(—x-6y)2(9ab+8)2(2n+5)2+n2
3
11
(—m-—)2(-5t+7)27012
52
1
(-2cd-—)29912(a-b-d)2
4
(2a+b+1)(2a+b-1)(x+y-4)(x+y+4)
(x+1)(x-1)+(x-5)(x-1)962
(5x-y)2+(x-y)(x+2y)2(a+2b)3
11
(—x-—y)24952(3x+5)2+2x2
64
1
(6xy+—x)21072(n-4)2-3n2
5
(7x-9)2(x-5y)2(bc-5a)2
1
(—x+3y)2(9ab+5)2(4n-5)2-7n2
4
11
(—m-—)2(-8t-8)22092
26
1
(-4cd-—)29952(a-b+d)2
4
(4a-b+3)(4a-b-3)(4x-y-4)(4x-y+4)
(x+1)(x-1)+(x+1)(x-1)2932
(5x+y)2+2(x-y)(x+2y)2(2a+b)3
11
(—x+—y)29992(4x-7)2-5x2
26
1
(3xy-—x)24032(6n-4)2-n2
4
(7x-9)2(3x-2y)2(xy-a)2
1
(—x-3y)2(2ab-1)2(4n+1)2+n2
4
11
(—m-—)2(-7t+3)25082
64
1
(-5cd+—)2932(a-b+d)2
5
(2a+b+3)(2a+b-3)(2x-y-3)(2x-y+3)
(x+4)(x-4)+(x-2)(x-5)7932
(6x-y)2-(x-y)(x+3y)2(a+2b)2
11
(—x-—y)29912(3x-10)2+6x2
58
1
(3xy-—x)21072(3n-3)2-9n2
2
(5x-4)2(2x+3y)2(xy+3a)2
1
(—x+7y)2(7ab+7)2(5n-2)2+6n2
6
11
(—m+—)2(-9t-6)28022
42
1
(-3cd-—)28942(a-b-d)2
3
(3a-b+1)(3a-b-1)(3x+y-1)(3x+y+1)
(x+3)(x-3)-(x-4)(x-4)6962
(3x+y)2-2(x-y)(x-4y)2(a+b)3
11
(—x+—y)29972(4x+5)2-9x2
52
1
(4xy-—x)27062(4n+3)2-10n2
6
(5x-7)2(5x+8y)2(mn+5a)2
1
(—x+8y)2(3ab+10)2(6n-3)2-10n2
3
11
(—m+—)2(-7t+8)27022
56
1
(-3cd-—)21952(3a-b-d)2
4
(4a+b+2)(4a+b-2)(4x+y-2)(4x+y+2)
(x+1)(x-1)-(x-3)(x+1)3972
(x-y)2-4(x+y)(x-4y)2(a+b)3
11
(—x-—y)26972(3x-4)2+3x2
45
1
(2xy+—x)210072(4n-4)2+4n2
6
(4x+6)2(8x+6y)2(ab+6a)2
1
(—x-7y)2(9ab-8)2(5n-3)2+7n2
3
11
(—m-—)2(-5t-6)22072
52
1
(-2cd+—)28932(2a+b+d)2
4
(3a+b+4)(3a+b-4)(3x+y-4)(3x+y+4)
(x+4)(x-4)-(x+3)(x-4)6912
(2x+y)2+3(x-y)(x-2y)2(a+2b)2
11
(—x-—y)28922(7x-2)2+9x2
54
1
(3xy+—x)22082(6n-5)2+3n2
2
(6x-5)2(7x-6y)2(bc-5a)2
1
(—x+2y)2(7ab-3)2(4n+3)2-2n2
6
11
(—m+—)2(-2t-4)22082
35
1
(-3cd-—)22922(2a-b-d)2
6
(2a+b+1)(2a+b-1)(3x-y-3)(3x-y+3)
(x+2)(x-2)+(x-1)(x+5)8962
(5x-y)2-3(x+y)(x+3y)2(a-b)3
11
(—x+—y)21972(3x+7)2+5x2
44
1
(3xy+—x)22092(6n+1)2+3n2
4
(x+3)2(8x+8y)2(xy-a)2
1
(—x+6y)2(9ab+2)2(4n+5)2-9n2
5
11
(—m-—)2(-5t+1)25032
25
1
(-3cd+—)29982(a-b+d)2
3
(2a+b+5)(2a+b-5)(3x+y-4)(3x+y+4)
(x+2)(x-2)-(x+5)(x-1)6992
(x-y)2+(x-y)(x-2y)2(a+3b)2
11
(—x+—y)23962(x-2)2+5x2
22
1
(6xy-—x)29062(6n-3)2+2n2
5
(9x+6)2(5x+4y)2(ab+a)2
1
(—x-3y)2(8ab+10)2(2n+2)2+7n2
2
11
(—m-—)2(-7t+8)27022
44
1
(-5cd+—)29912(a+b-d)2
4
(a-b+1)(a-b-1)(4x-y-1)(4x-y+1)
(x+3)(x-3)+(x+5)(x+4)4912
(2x-y)2+2(x-y)(x-3y)2(2a+3b)2
11
(—x-—y)2962(7x-9)2-4x2
52
1
(4xy+—x)28042(n-3)2-3n2
3
(7x+9)2(8x-5y)2(ab-4a)2
1
(—x-9y)2(5ab+10)2(5n+5)2-10n2
3
11
(—m+—)2(-9t+4)22022
32
1
(-3cd+—)25942(2a+b-d)2
6
(2a-b+2)(2a-b-2)(3x+y-5)(3x+y+5)
(x+3)(x-3)+(x+5)(x+2)1922
(6x+y)2+(x-y)(x+4y)2(2a+2b)2
11
(—x-—y)22982(2x+2)2-2x2
64
1
(2xy+—x)22012(2n-4)2-7n2
6
(5x-7)2(3x-9y)2(ab+2a)2
1
(—x+8y)2(3ab+2)2
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