初一数学下册平方差公式专项练习 57.docx
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初一数学下册平方差公式专项练习57
(3-6a)(3+6a)(0.5x+0.1)(0.5x-0.1)
(a+2)(a-2)(x+6)(x-6)(x2+36)
(ab+10)(ab-10)(a+4)(a-4)(a2+16)
(-4m-2n)(-4m+2n)(an+b)(an-b)
(x+4y)(x-4y)(7mn-2n)(7mn+2n)
(y+9z)(y-9z)(-2x-5y)(-2x+5y)
(6x+9)(6x-9)(2x-7y)(2x+7y)
(-7x+4)(-7x-4)(2a-3b)(2a+3b)
(2-9a)(2+9a)(0.2x+0.8)(0.2x-0.8)
(5m-5n)(5m+5n)+6n2(-2k+5)(-2k-5)
(3x+3)(3x-3)(2x-y)(2x+y)
(4+6x)(4-6x)5x2-(y+4x)(y-4x)
(8-6a)(8+6a)(0.3x+0.4)(0.3x-0.4)
(a+7)(a-7)(x+1)(x-1)(x2+1)
(ab+1)(ab-1)(a+7)(a-7)(a2+49)
(-5m-5n)(-5m+5n)(an+6b)(an-6b)
(x+3y)(x-3y)(4mn-5n)(4mn+5n)
(y+2z)(y-2z)(-5x-5y)(-5x+5y)
(2x+1)(2x-1)(5x-3y)(5x+3y)
(-6x+2)(-6x-2)(7a-b)(7a+b)
(8-5a)(8+5a)(0.5x+0.4)(0.5x-0.4)
(m-5n)(m+5n)+6n2(-9k+3)(-9k-3)
(x+2)(x-2)(x-4y)(x+4y)
(4+4x)(4-4x)4x2-(y+2x)(y-2x)
(9-5a)(9+5a)(0.3x+0.4)(0.3x-0.4)
(a+3)(a-3)(x+9)(x-9)(x2+81)
(ab+2)(ab-2)(a+3)(a-3)(a2+9)
(-2m-4n)(-2m+4n)(an+4b)(an-4b)
(x+6y)(x-6y)(8mn-4n)(8mn+4n)
(y+9z)(y-9z)(-3x-5y)(-3x+5y)
(6x+2)(6x-2)(7x-3y)(7x+3y)
(-6x+7)(-6x-7)(3a-5b)(3a+5b)
(7-10a)(7+10a)(0.3x+0.1)(0.3x-0.1)
(5m-2n)(5m+2n)-2n2(-6k+8)(-6k-8)
(x+8)(x-8)(6x-7y)(6x+7y)
(3+3x)(3-3x)8x2+(y+6x)(y-6x)
(6-5a)(6+5a)(0.8x+0.4)(0.8x-0.4)
(a+10)(a-10)(x+5)(x-5)(x2+25)
(ab+3)(ab-3)(a+4)(a-4)(a2+16)
(-4m-3n)(-4m+3n)(an+7b)(an-7b)
(x+7y)(x-7y)(4mn-n)(4mn+n)
(y+7z)(y-7z)(-3x-4y)(-3x+4y)
(7x+5)(7x-5)(6x-6y)(6x+6y)
(-3x+10)(-3x-10)(9a-5b)(9a+5b)
(8-7a)(8+7a)(0.1x+0.6)(0.1x-0.6)
(8m-2n)(8m+2n)-5n2(-5k+5)(-5k-5)
(4x+4)(4x-4)(3x-y)(3x+y)
(8+7x)(8-7x)3x2-(y+3x)(y-3x)
(4-10a)(4+10a)(0.7x+0.7)(0.7x-0.7)
(a+2)(a-2)(x+1)(x-1)(x2+1)
(ab+2)(ab-2)(a+8)(a-8)(a2+64)
(-3m-n)(-3m+n)(an+b)(an-b)
(x+6y)(x-6y)(6mn-5n)(6mn+5n)
(y+6z)(y-6z)(-7x-3y)(-7x+3y)
(7x+4)(7x-4)(7x-6y)(7x+6y)
(-7x+8)(-7x-8)(2a-5b)(2a+5b)
(8-10a)(8+10a)(0.8x+0.9)(0.8x-0.9)
(3m-5n)(3m+5n)+5n2(-2k+7)(-2k-7)
(7x+2)(7x-2)(9x-6y)(9x+6y)
(7+10x)(7-10x)7x2-(y+4x)(y-4x)
(9-8a)(9+8a)(0.9x+0.5)(0.9x-0.5)
(a+2)(a-2)(x+2)(x-2)(x2+4)
(ab+10)(ab-10)(a+8)(a-8)(a2+64)
(-9m-3n)(-9m+3n)(an+6b)(an-6b)
(x+8y)(x-8y)(3mn-n)(3mn+n)
(y+4z)(y-4z)(-8x-2y)(-8x+2y)
(8x+4)(8x-4)(9x-3y)(9x+3y)
(-2x+5)(-2x-5)(7a-3b)(7a+3b)
(1-4a)(1+4a)(0.3x+0.7)(0.3x-0.7)
(9m-3n)(9m+3n)+4n2(-5k+6)(-5k-6)
(8x+4)(8x-4)(9x-6y)(9x+6y)
(5+x)(5-x)7x2-(y+3x)(y-3x)
(7-5a)(7+5a)(0.7x+0.8)(0.7x-0.8)
(a+7)(a-7)(x+3)(x-3)(x2+9)
(ab+4)(ab-4)(a+2)(a-2)(a2+4)
(-9m-n)(-9m+n)(an+2b)(an-2b)
(x+5y)(x-5y)(7mn-4n)(7mn+4n)
(y+7z)(y-7z)(-6x-4y)(-6x+4y)
(9x+10)(9x-10)(x-8y)(x+8y)
(-6x+7)(-6x-7)(2a-4b)(2a+4b)
(2-5a)(2+5a)(0.4x+0.4)(0.4x-0.4)
(9m-n)(9m+n)-4n2(-8k+9)(-8k-9)
(5x+2)(5x-2)(x-9y)(x+9y)
(4+x)(4-x)6x2-(y+4x)(y-4x)
(10-7a)(10+7a)(0.6x+0.4)(0.6x-0.4)
(a+7)(a-7)(x+7)(x-7)(x2+49)
(ab+10)(ab-10)(a+7)(a-7)(a2+49)
(-7m-5n)(-7m+5n)(an+7b)(an-7b)
(x+7y)(x-7y)(4mn-n)(4mn+n)
(y+8z)(y-8z)(-x-y)(-x+y)
(9x+6)(9x-6)(3x-2y)(3x+2y)
(-x+10)(-x-10)(8a-3b)(8a+3b)
(6-10a)(6+10a)(0.5x+0.4)(0.5x-0.4)
(5m-5n)(5m+5n)-8n2(-8k+4)(-8k-4)
(8x+5)(8x-5)(7x-7y)(7x+7y)
(9+7x)(9-7x)4x2+(y+4x)(y-4x)
(1-8a)(1+8a)(0.3x+0.7)(0.3x-0.7)
(a+1)(a-1)(x+8)(x-8)(x2+64)
(ab+3)(ab-3)(a+2)(a-2)(a2+4)
(-7m-5n)(-7m+5n)(an+4b)(an-4b)
(x+7y)(x-7y)(8mn-n)(8mn+n)
(y+5z)(y-5z)(-6x-y)(-6x+y)
(7x+8)(7x-8)(4x-4y)(4x+4y)
(-7x+4)(-7x-4)(4a-4b)(4a+4b)
(10-4a)(10+4a)(0.1x+0.4)(0.1x-0.4)
(4m-n)(4m+n)+8n2(-6k+7)(-6k-7)
(4x+2)(4x-2)(7x-9y)(7x+9y)
(5+4x)(5-4x)7x2+(y+2x)(y-2x)
(6-6a)(6+6a)(0.9x+1)(0.9x-1)
(a+8)(a-8)(x+5)(x-5)(x2+25)
(ab+6)(ab-6)(a+1)(a-1)(a2+1)
(-2m-n)(-2m+n)(an+9b)(an-9b)
(x+3y)(x-3y)(9mn-4n)(9mn+4n)
(y+9z)(y-9z)(-7x-4y)(-7x+4y)