初一数学下册平方差公式专项练习 26.docx
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初一数学下册平方差公式专项练习 26.docx
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初一数学下册平方差公式专项练习26
(6x+8)(6x-8)(2x-5y)(2x+5y)
(-x+8)(-x-8)(3a-2b)(3a+2b)
(10-3a)(10+3a)(0.5x+0.5)(0.5x-0.5)
(m-2n)(m+2n)+7n2(-8k+4)(-8k-4)
(5x+6)(5x-6)(7x-7y)(7x+7y)
(5+4x)(5-4x)4x2+(y+2x)(y-2x)
(6-3a)(6+3a)(0.4x+0.2)(0.4x-0.2)
(a+5)(a-5)(x+3)(x-3)(x2+9)
(ab+5)(ab-5)(a+9)(a-9)(a2+81)
(-2m-3n)(-2m+3n)(an+4b)(an-4b)
(x+4y)(x-4y)(6mn-n)(6mn+n)
(y+3z)(y-3z)(-6x-5y)(-6x+5y)
(4x+8)(4x-8)(x-4y)(x+4y)
(-x+1)(-x-1)(4a-4b)(4a+4b)
(8-7a)(8+7a)(0.4x+0.9)(0.4x-0.9)
(5m-2n)(5m+2n)+4n2(-k+1)(-k-1)
(7x+4)(7x-4)(7x-5y)(7x+5y)
(2+x)(2-x)6x2-(y+6x)(y-6x)
(4-a)(4+a)(0.8x+0.9)(0.8x-0.9)
(a+4)(a-4)(x+3)(x-3)(x2+9)
(ab+8)(ab-8)(a+9)(a-9)(a2+81)
(-9m-2n)(-9m+2n)(an+3b)(an-3b)
(x+5y)(x-5y)(6mn-n)(6mn+n)
(y+3z)(y-3z)(-x-4y)(-x+4y)
(2x+2)(2x-2)(8x-7y)(8x+7y)
(-x+3)(-x-3)(3a-4b)(3a+4b)
(4-4a)(4+4a)(0.7x+0.2)(0.7x-0.2)
(6m-n)(6m+n)-6n2(-2k+9)(-2k-9)
(2x+6)(2x-6)(x-3y)(x+3y)
(3+5x)(3-5x)5x2-(y+4x)(y-4x)
(10-7a)(10+7a)(0.9x+0.5)(0.9x-0.5)
(a+3)(a-3)(x+3)(x-3)(x2+9)
(ab+3)(ab-3)(a+3)(a-3)(a2+9)
(-7m-3n)(-7m+3n)(an+8b)(an-8b)
(x+4y)(x-4y)(mn-2n)(mn+2n)
(y+7z)(y-7z)(-6x-2y)(-6x+2y)
(8x+6)(8x-6)(x-6y)(x+6y)
(-7x+5)(-7x-5)(a-3b)(a+3b)
(4-5a)(4+5a)(0.1x+0.4)(0.1x-0.4)
(6m-3n)(6m+3n)+6n2(-6k+3)(-6k-3)
(3x+9)(3x-9)(5x-4y)(5x+4y)
(9+10x)(9-10x)6x2-(y+5x)(y-5x)
(9-3a)(9+3a)(0.7x+0.6)(0.7x-0.6)
(a+9)(a-9)(x+4)(x-4)(x2+16)
(ab+3)(ab-3)(a+7)(a-7)(a2+49)
(-m-4n)(-m+4n)(an+8b)(an-8b)
(x+2y)(x-2y)(3mn-2n)(3mn+2n)
(y+7z)(y-7z)(-5x-y)(-5x+y)
(7x+1)(7x-1)(9x-9y)(9x+9y)
(-9x+8)(-9x-8)(2a-2b)(2a+2b)
(8-6a)(8+6a)(0.1x+0.6)(0.1x-0.6)
(5m-2n)(5m+2n)-9n2(-5k+1)(-5k-1)
(5x+9)(5x-9)(7x-4y)(7x+4y)
(6+x)(6-x)6x2-(y+4x)(y-4x)
(10-6a)(10+6a)(0.5x+0.5)(0.5x-0.5)
(a+5)(a-5)(x+9)(x-9)(x2+81)
(ab+3)(ab-3)(a+7)(a-7)(a2+49)
(-2m-n)(-2m+n)(an+8b)(an-8b)
(x+4y)(x-4y)(5mn-3n)(5mn+3n)
(y+3z)(y-3z)(-4x-2y)(-4x+2y)
(5x+2)(5x-2)(6x-9y)(6x+9y)
(-7x+1)(-7x-1)(6a-3b)(6a+3b)
(2-4a)(2+4a)(0.3x+0.3)(0.3x-0.3)
(9m-n)(9m+n)+2n2(-3k+6)(-3k-6)
(8x+3)(8x-3)(2x-9y)(2x+9y)
(7+9x)(7-9x)2x2-(y+6x)(y-6x)
(9-9a)(9+9a)(0.6x+0.2)(0.6x-0.2)
(a+8)(a-8)(x+9)(x-9)(x2+81)
(ab+3)(ab-3)(a+8)(a-8)(a2+64)
(-m-2n)(-m+2n)(an+7b)(an-7b)
(x+9y)(x-9y)(8mn-2n)(8mn+2n)
(y+3z)(y-3z)(-x-y)(-x+y)
(8x+8)(8x-8)(8x-4y)(8x+4y)
(-5x+2)(-5x-2)(7a-b)(7a+b)
(2-10a)(2+10a)(0.2x+0.7)(0.2x-0.7)
(3m-4n)(3m+4n)-7n2(-9k+8)(-9k-8)
(3x+4)(3x-4)(x-7y)(x+7y)
(7+5x)(7-5x)3x2-(y+5x)(y-5x)
(3-5a)(3+5a)(0.8x+0.7)(0.8x-0.7)
(a+7)(a-7)(x+2)(x-2)(x2+4)
(ab+2)(ab-2)(a+5)(a-5)(a2+25)
(-8m-4n)(-8m+4n)(an+2b)(an-2b)
(x+7y)(x-7y)(7mn-5n)(7mn+5n)
(y+2z)(y-2z)(-2x-5y)(-2x+5y)
(4x+1)(4x-1)(5x-8y)(5x+8y)
(-9x+7)(-9x-7)(4a-b)(4a+b)
(4-7a)(4+7a)(0.9x+0.8)(0.9x-0.8)
(m-2n)(m+2n)+2n2(-4k+6)(-4k-6)
(3x+9)(3x-9)(3x-7y)(3x+7y)
(2+6x)(2-6x)8x2-(y+4x)(y-4x)
(1-9a)(1+9a)(0.9x+0.2)(0.9x-0.2)
(a+6)(a-6)(x+7)(x-7)(x2+49)
(ab+8)(ab-8)(a+5)(a-5)(a2+25)
(-m-4n)(-m+4n)(an+8b)(an-8b)
(x+3y)(x-3y)(9mn-3n)(9mn+3n)
(y+2z)(y-2z)(-x-4y)(-x+4y)
(x+9)(x-9)(x-2y)(x+2y)
(-5x+8)(-5x-8)(2a-2b)(2a+2b)
(6-a)(6+a)(0.3x+0.8)(0.3x-0.8)
(2m-4n)(2m+4n)+9n2(-8k+7)(-8k-7)
(3x+10)(3x-10)(8x-5y)(8x+5y)
(10+8x)(10-8x)8x2-(y+4x)(y-4x)
(5-6a)(5+6a)(0.1x+0.3)(0.1x-0.3)
(a+10)(a-10)(x+1)(x-1)(x2+1)
(ab+4)(ab-4)(a+2)(a-2)(a2+4)
(-5m-2n)(-5m+2n)(an+7b)(an-7b)
(x+3y)(x-3y)(4mn-4n)(4mn+4n)
(y+4z)(y-4z)(-4x-y)(-4x+y)
(9x+1)(9x-1)(9x-y)(9x+y)
(-5x+4)(-5x-4)(7a-5b)(7a+5b)
(3-2a)(3+2a)(0.9x+0.1)(0.9x-0.1)
(8m-5n)(8m+5n)+6n2(-5k+6)(-5k-6)
(6x+4)(6x-4)(6x-5y)(6x+5y)
(5+x)(5-x)6x2+(y+6x)(y-6x)
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