初一数学下册平方差公式专项练习 20.docx
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初一数学下册平方差公式专项练习20
(5x+7)(5x-7)(4x-4y)(4x+4y)
(-5x+7)(-5x-7)(8a-2b)(8a+2b)
(2-7a)(2+7a)(0.1x+0.6)(0.1x-0.6)
(8m-5n)(8m+5n)+7n2(-5k+9)(-5k-9)
(9x+10)(9x-10)(6x-6y)(6x+6y)
(9+10x)(9-10x)4x2+(y+2x)(y-2x)
(5-8a)(5+8a)(0.7x+0.7)(0.7x-0.7)
(a+9)(a-9)(x+2)(x-2)(x2+4)
(ab+10)(ab-10)(a+6)(a-6)(a2+36)
(-5m-3n)(-5m+3n)(an+4b)(an-4b)
(x+4y)(x-4y)(4mn-2n)(4mn+2n)
(y+8z)(y-8z)(-2x-4y)(-2x+4y)
(6x+8)(6x-8)(4x-9y)(4x+9y)
(-9x+10)(-9x-10)(6a-3b)(6a+3b)
(2-8a)(2+8a)(0.8x+0.4)(0.8x-0.4)
(3m-5n)(3m+5n)-8n2(-2k+7)(-2k-7)
(3x+6)(3x-6)(6x-y)(6x+y)
(7+x)(7-x)7x2-(y+2x)(y-2x)
(9-7a)(9+7a)(0.4x+0.7)(0.4x-0.7)
(a+7)(a-7)(x+3)(x-3)(x2+9)
(ab+6)(ab-6)(a+9)(a-9)(a2+81)
(-m-n)(-m+n)(an+2b)(an-2b)
(x+8y)(x-8y)(mn-n)(mn+n)
(y+7z)(y-7z)(-4x-2y)(-4x+2y)
(4x+5)(4x-5)(x-4y)(x+4y)
(-4x+9)(-4x-9)(4a-3b)(4a+3b)
(7-3a)(7+3a)(0.9x+0.2)(0.9x-0.2)
(m-n)(m+n)+6n2(-k+9)(-k-9)
(3x+2)(3x-2)(5x-9y)(5x+9y)
(1+5x)(1-5x)6x2-(y+6x)(y-6x)
(7-10a)(7+10a)(0.6x+1)(0.6x-1)
(a+10)(a-10)(x+3)(x-3)(x2+9)
(ab+8)(ab-8)(a+1)(a-1)(a2+1)
(-8m-4n)(-8m+4n)(an+b)(an-b)
(x+6y)(x-6y)(mn-n)(mn+n)
(y+2z)(y-2z)(-6x-4y)(-6x+4y)
(8x+5)(8x-5)(x-9y)(x+9y)
(-7x+5)(-7x-5)(7a-5b)(7a+5b)
(6-9a)(6+9a)(0.5x+0.9)(0.5x-0.9)
(9m-2n)(9m+2n)+2n2(-5k+7)(-5k-7)
(x+1)(x-1)(6x-2y)(6x+2y)
(3+8x)(3-8x)2x2+(y+2x)(y-2x)
(2-10a)(2+10a)(0.7x+0.5)(0.7x-0.5)
(a+2)(a-2)(x+6)(x-6)(x2+36)
(ab+7)(ab-7)(a+6)(a-6)(a2+36)
(-2m-5n)(-2m+5n)(an+8b)(an-8b)
(x+2y)(x-2y)(9mn-n)(9mn+n)
(y+8z)(y-8z)(-6x-3y)(-6x+3y)
(7x+7)(7x-7)(6x-9y)(6x+9y)
(-x+5)(-x-5)(2a-3b)(2a+3b)
(4-10a)(4+10a)(0.2x+0.8)(0.2x-0.8)
(5m-2n)(5m+2n)-7n2(-k+5)(-k-5)
(3x+4)(3x-4)(5x-7y)(5x+7y)
(2+6x)(2-6x)4x2-(y+4x)(y-4x)
(8-3a)(8+3a)(0.1x+0.7)(0.1x-0.7)
(a+2)(a-2)(x+2)(x-2)(x2+4)
(ab+5)(ab-5)(a+9)(a-9)(a2+81)
(-2m-5n)(-2m+5n)(an+8b)(an-8b)
(x+7y)(x-7y)(4mn-4n)(4mn+4n)
(y+5z)(y-5z)(-9x-2y)(-9x+2y)
(8x+3)(8x-3)(7x-9y)(7x+9y)
(-2x+10)(-2x-10)(2a-3b)(2a+3b)
(5-10a)(5+10a)(0.2x+0.7)(0.2x-0.7)
(m-2n)(m+2n)+3n2(-k+2)(-k-2)
(6x+6)(6x-6)(5x-2y)(5x+2y)
(1+8x)(1-8x)7x2-(y+4x)(y-4x)
(8-6a)(8+6a)(0.8x+0.3)(0.8x-0.3)
(a+7)(a-7)(x+2)(x-2)(x2+4)
(ab+5)(ab-5)(a+6)(a-6)(a2+36)
(-8m-5n)(-8m+5n)(an+5b)(an-5b)
(x+6y)(x-6y)(3mn-2n)(3mn+2n)
(y+8z)(y-8z)(-4x-5y)(-4x+5y)
(8x+3)(8x-3)(2x-6y)(2x+6y)
(-5x+6)(-5x-6)(9a-2b)(9a+2b)
(6-6a)(6+6a)(0.7x+0.7)(0.7x-0.7)
(6m-2n)(6m+2n)+5n2(-3k+2)(-3k-2)
(6x+2)(6x-2)(7x-3y)(7x+3y)
(1+4x)(1-4x)6x2-(y+4x)(y-4x)
(6-7a)(6+7a)(0.9x+0.6)(0.9x-0.6)
(a+1)(a-1)(x+8)(x-8)(x2+64)
(ab+4)(ab-4)(a+8)(a-8)(a2+64)
(-2m-4n)(-2m+4n)(an+9b)(an-9b)
(x+5y)(x-5y)(7mn-4n)(7mn+4n)
(y+3z)(y-3z)(-4x-3y)(-4x+3y)
(x+9)(x-9)(8x-4y)(8x+4y)
(-3x+9)(-3x-9)(8a-b)(8a+b)
(3-a)(3+a)(0.2x+0.9)(0.2x-0.9)
(4m-5n)(4m+5n)-4n2(-k+9)(-k-9)
(9x+8)(9x-8)(3x-6y)(3x+6y)
(2+10x)(2-10x)8x2-(y+2x)(y-2x)
(3-7a)(3+7a)(0.4x+0.9)(0.4x-0.9)
(a+5)(a-5)(x+8)(x-8)(x2+64)
(ab+10)(ab-10)(a+5)(a-5)(a2+25)
(-6m-3n)(-6m+3n)(an+6b)(an-6b)
(x+3y)(x-3y)(7mn-4n)(7mn+4n)
(y+2z)(y-2z)(-7x-3y)(-7x+3y)
(9x+7)(9x-7)(3x-4y)(3x+4y)
(-4x+10)(-4x-10)(7a-4b)(7a+4b)
(6-8a)(6+8a)(0.7x+1)(0.7x-1)
(6m-5n)(6m+5n)+5n2(-7k+7)(-7k-7)
(2x+4)(2x-4)(2x-7y)(2x+7y)
(5+5x)(5-5x)9x2+(y+2x)(y-2x)
(3-3a)(3+3a)(0.6x+0.4)(0.6x-0.4)
(a+5)(a-5)(x+3)(x-3)(x2+9)
(ab+4)(ab-4)(a+2)(a-2)(a2+4)
(-7m-n)(-7m+n)(an+7b)(an-7b)
(x+8y)(x-8y)(5mn-5n)(5mn+5n)
(y+9z)(y-9z)(-2x-3y)(-2x+3y)
(2x+1)(2x-1)(3x-y)(3x+y)
(-7x+2)(-7x-2)(9a-5b)(9a+5b)
(1-10a)(1+10a)(0.9x+0.5)(0.9x-0.5)
(3m-n)(3m+n)-7n2(-5k+4)(-5k-4)
(6x+5)(6x-5)(3x-8y)(3x+8y)
(2+7x)(2-7x)5x2+(y+4x)(y-4x)