初一数学下册平方差公式专项练习 84.docx
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初一数学下册平方差公式专项练习 84.docx
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初一数学下册平方差公式专项练习84
(x+8)(x-8)(6x-8y)(6x+8y)
(-4x+10)(-4x-10)(4a-b)(4a+b)
(7-a)(7+a)(0.2x+0.4)(0.2x-0.4)
(3m-5n)(3m+5n)-5n2(-9k+6)(-9k-6)
(3x+6)(3x-6)(6x-2y)(6x+2y)
(5+7x)(5-7x)4x2-(y+3x)(y-3x)
(2-4a)(2+4a)(0.8x+1)(0.8x-1)
(a+2)(a-2)(x+1)(x-1)(x2+1)
(ab+2)(ab-2)(a+4)(a-4)(a2+16)
(-7m-5n)(-7m+5n)(an+b)(an-b)
(x+2y)(x-2y)(6mn-n)(6mn+n)
(y+6z)(y-6z)(-9x-y)(-9x+y)
(6x+2)(6x-2)(2x-8y)(2x+8y)
(-3x+7)(-3x-7)(8a-b)(8a+b)
(5-4a)(5+4a)(0.5x+0.8)(0.5x-0.8)
(m-2n)(m+2n)+6n2(-9k+4)(-9k-4)
(5x+1)(5x-1)(5x-5y)(5x+5y)
(1+3x)(1-3x)8x2-(y+2x)(y-2x)
(4-4a)(4+4a)(0.7x+0.3)(0.7x-0.3)
(a+5)(a-5)(x+8)(x-8)(x2+64)
(ab+5)(ab-5)(a+6)(a-6)(a2+36)
(-2m-3n)(-2m+3n)(an+b)(an-b)
(x+7y)(x-7y)(4mn-n)(4mn+n)
(y+5z)(y-5z)(-4x-2y)(-4x+2y)
(5x+8)(5x-8)(9x-3y)(9x+3y)
(-x+5)(-x-5)(7a-4b)(7a+4b)
(4-3a)(4+3a)(0.4x+0.1)(0.4x-0.1)
(8m-n)(8m+n)+3n2(-4k+9)(-4k-9)
(8x+9)(8x-9)(8x-y)(8x+y)
(2+5x)(2-5x)7x2-(y+4x)(y-4x)
(5-9a)(5+9a)(0.3x+0.2)(0.3x-0.2)
(a+5)(a-5)(x+7)(x-7)(x2+49)
(ab+5)(ab-5)(a+9)(a-9)(a2+81)
(-5m-3n)(-5m+3n)(an+3b)(an-3b)
(x+5y)(x-5y)(7mn-2n)(7mn+2n)
(y+4z)(y-4z)(-x-4y)(-x+4y)
(6x+8)(6x-8)(6x-8y)(6x+8y)
(-4x+1)(-4x-1)(2a-2b)(2a+2b)
(2-6a)(2+6a)(0.4x+1)(0.4x-1)
(m-5n)(m+5n)-9n2(-5k+5)(-5k-5)
(6x+2)(6x-2)(2x-y)(2x+y)
(10+x)(10-x)9x2-(y+6x)(y-6x)
(10-2a)(10+2a)(0.3x+0.4)(0.3x-0.4)
(a+5)(a-5)(x+7)(x-7)(x2+49)
(ab+1)(ab-1)(a+2)(a-2)(a2+4)
(-7m-3n)(-7m+3n)(an+b)(an-b)
(x+3y)(x-3y)(9mn-3n)(9mn+3n)
(y+5z)(y-5z)(-7x-4y)(-7x+4y)
(3x+1)(3x-1)(8x-2y)(8x+2y)
(-7x+4)(-7x-4)(4a-3b)(4a+3b)
(10-a)(10+a)(0.8x+0.6)(0.8x-0.6)
(8m-5n)(8m+5n)+7n2(-7k+6)(-7k-6)
(5x+4)(5x-4)(2x-4y)(2x+4y)
(3+5x)(3-5x)8x2-(y+3x)(y-3x)
(10-3a)(10+3a)(0.4x+0.8)(0.4x-0.8)
(a+4)(a-4)(x+5)(x-5)(x2+25)
(ab+10)(ab-10)(a+6)(a-6)(a2+36)
(-2m-3n)(-2m+3n)(an+5b)(an-5b)
(x+2y)(x-2y)(9mn-5n)(9mn+5n)
(y+4z)(y-4z)(-4x-2y)(-4x+2y)
(8x+10)(8x-10)(2x-2y)(2x+2y)
(-7x+10)(-7x-10)(5a-3b)(5a+3b)
(3-5a)(3+5a)(0.1x+1)(0.1x-1)
(4m-4n)(4m+4n)-2n2(-k+7)(-k-7)
(2x+10)(2x-10)(2x-2y)(2x+2y)
(8+2x)(8-2x)5x2+(y+2x)(y-2x)
(9-7a)(9+7a)(0.9x+0.6)(0.9x-0.6)
(a+9)(a-9)(x+9)(x-9)(x2+81)
(ab+7)(ab-7)(a+5)(a-5)(a2+25)
(-m-3n)(-m+3n)(an+b)(an-b)
(x+3y)(x-3y)(4mn-5n)(4mn+5n)
(y+2z)(y-2z)(-4x-4y)(-4x+4y)
(9x+5)(9x-5)(x-2y)(x+2y)
(-6x+10)(-6x-10)(3a-2b)(3a+2b)
(10-2a)(10+2a)(0.1x+0.9)(0.1x-0.9)
(9m-3n)(9m+3n)-6n2(-7k+8)(-7k-8)
(x+4)(x-4)(9x-6y)(9x+6y)
(8+5x)(8-5x)6x2+(y+4x)(y-4x)
(2-7a)(2+7a)(0.4x+0.9)(0.4x-0.9)
(a+2)(a-2)(x+1)(x-1)(x2+1)
(ab+6)(ab-6)(a+3)(a-3)(a2+9)
(-4m-5n)(-4m+5n)(an+4b)(an-4b)
(x+9y)(x-9y)(7mn-5n)(7mn+5n)
(y+3z)(y-3z)(-3x-4y)(-3x+4y)
(4x+9)(4x-9)(5x-2y)(5x+2y)
(-7x+5)(-7x-5)(3a-3b)(3a+3b)
(2-3a)(2+3a)(0.2x+0.9)(0.2x-0.9)
(4m-5n)(4m+5n)+2n2(-5k+4)(-5k-4)
(5x+2)(5x-2)(3x-y)(3x+y)
(2+7x)(2-7x)3x2-(y+6x)(y-6x)
(7-9a)(7+9a)(0.5x+0.7)(0.5x-0.7)
(a+4)(a-4)(x+7)(x-7)(x2+49)
(ab+5)(ab-5)(a+6)(a-6)(a2+36)
(-7m-5n)(-7m+5n)(an+9b)(an-9b)
(x+6y)(x-6y)(5mn-3n)(5mn+3n)
(y+6z)(y-6z)(-7x-y)(-7x+y)
(6x+10)(6x-10)(9x-9y)(9x+9y)
(-3x+6)(-3x-6)(3a-3b)(3a+3b)
(7-8a)(7+8a)(0.1x+0.5)(0.1x-0.5)
(3m-4n)(3m+4n)+7n2(-9k+5)(-9k-5)
(4x+8)(4x-8)(7x-2y)(7x+2y)
(4+3x)(4-3x)6x2+(y+5x)(y-5x)
(3-8a)(3+8a)(0.1x+0.5)(0.1x-0.5)
(a+9)(a-9)(x+7)(x-7)(x2+49)
(ab+4)(ab-4)(a+4)(a-4)(a2+16)
(-m-n)(-m+n)(an+8b)(an-8b)
(x+7y)(x-7y)(6mn-n)(6mn+n)
(y+6z)(y-6z)(-3x-5y)(-3x+5y)
(5x+7)(5x-7)(6x-2y)(6x+2y)
(-6x+8)(-6x-8)(a-2b)(a+2b)
(3-7a)(3+7a)(0.6x+0.8)(0.6x-0.8)
(m-2n)(m+2n)+4n2(-8k+2)(-8k-2)
(2x+8)(2x-8)(4x-4y)(4x+4y)
(6+4x)(6-4x)7x2-(y+6x)(y-6x)
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