初一数学下册平方差公式专项练习 19.docx
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初一数学下册平方差公式专项练习 19.docx
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初一数学下册平方差公式专项练习19
(2-4a)(2+4a)(0.6x+0.5)(0.6x-0.5)
(a+7)(a-7)(x+6)(x-6)(x2+36)
(ab+4)(ab-4)(a+8)(a-8)(a2+64)
(-5m-n)(-5m+n)(an+6b)(an-6b)
(x+6y)(x-6y)(6mn-5n)(6mn+5n)
(y+3z)(y-3z)(-7x-2y)(-7x+2y)
(7x+10)(7x-10)(5x-8y)(5x+8y)
(-4x+7)(-4x-7)(5a-b)(5a+b)
(3-2a)(3+2a)(0.7x+1)(0.7x-1)
(3m-2n)(3m+2n)-4n2(-5k+4)(-5k-4)
(9x+7)(9x-7)(4x-y)(4x+y)
(3+3x)(3-3x)4x2+(y+3x)(y-3x)
(1-5a)(1+5a)(0.8x+0.9)(0.8x-0.9)
(a+4)(a-4)(x+1)(x-1)(x2+1)
(ab+3)(ab-3)(a+5)(a-5)(a2+25)
(-9m-n)(-9m+n)(an+7b)(an-7b)
(x+4y)(x-4y)(3mn-4n)(3mn+4n)
(y+2z)(y-2z)(-6x-2y)(-6x+2y)
(x+2)(x-2)(3x-4y)(3x+4y)
(-x+10)(-x-10)(6a-5b)(6a+5b)
(6-10a)(6+10a)(0.5x+0.2)(0.5x-0.2)
(9m-4n)(9m+4n)+2n2(-k+2)(-k-2)
(4x+6)(4x-6)(2x-9y)(2x+9y)
(4+8x)(4-8x)8x2-(y+5x)(y-5x)
(9-8a)(9+8a)(0.8x+0.5)(0.8x-0.5)
(a+4)(a-4)(x+1)(x-1)(x2+1)
(ab+10)(ab-10)(a+4)(a-4)(a2+16)
(-3m-n)(-3m+n)(an+6b)(an-6b)
(x+3y)(x-3y)(9mn-4n)(9mn+4n)
(y+9z)(y-9z)(-9x-4y)(-9x+4y)
(7x+9)(7x-9)(5x-3y)(5x+3y)
(-2x+10)(-2x-10)(2a-5b)(2a+5b)
(10-a)(10+a)(0.5x+0.4)(0.5x-0.4)
(2m-5n)(2m+5n)-2n2(-6k+5)(-6k-5)
(x+5)(x-5)(7x-4y)(7x+4y)
(2+6x)(2-6x)3x2+(y+3x)(y-3x)
(3-8a)(3+8a)(0.6x+0.1)(0.6x-0.1)
(a+4)(a-4)(x+2)(x-2)(x2+4)
(ab+1)(ab-1)(a+5)(a-5)(a2+25)
(-4m-4n)(-4m+4n)(an+4b)(an-4b)
(x+8y)(x-8y)(5mn-n)(5mn+n)
(y+5z)(y-5z)(-5x-4y)(-5x+4y)
(4x+5)(4x-5)(7x-8y)(7x+8y)
(-3x+7)(-3x-7)(5a-4b)(5a+4b)
(3-2a)(3+2a)(0.1x+0.6)(0.1x-0.6)
(8m-3n)(8m+3n)+5n2(-2k+1)(-2k-1)
(8x+1)(8x-1)(x-6y)(x+6y)
(9+9x)(9-9x)4x2+(y+3x)(y-3x)
(1-3a)(1+3a)(0.1x+0.1)(0.1x-0.1)
(a+3)(a-3)(x+7)(x-7)(x2+49)
(ab+7)(ab-7)(a+7)(a-7)(a2+49)
(-2m-5n)(-2m+5n)(an+5b)(an-5b)
(x+6y)(x-6y)(4mn-3n)(4mn+3n)
(y+3z)(y-3z)(-9x-5y)(-9x+5y)
(6x+4)(6x-4)(8x-2y)(8x+2y)
(-5x+9)(-5x-9)(2a-4b)(2a+4b)
(4-8a)(4+8a)(0.5x+0.6)(0.5x-0.6)
(m-2n)(m+2n)-3n2(-7k+1)(-7k-1)
(x+5)(x-5)(7x-9y)(7x+9y)
(4+2x)(4-2x)8x2+(y+3x)(y-3x)
(9-10a)(9+10a)(0.6x+0.4)(0.6x-0.4)
(a+4)(a-4)(x+5)(x-5)(x2+25)
(ab+5)(ab-5)(a+4)(a-4)(a2+16)
(-8m-4n)(-8m+4n)(an+b)(an-b)
(x+2y)(x-2y)(5mn-2n)(5mn+2n)
(y+4z)(y-4z)(-8x-2y)(-8x+2y)
(5x+8)(5x-8)(2x-3y)(2x+3y)
(-8x+3)(-8x-3)(9a-5b)(9a+5b)
(6-6a)(6+6a)(0.9x+0.6)(0.9x-0.6)
(7m-4n)(7m+4n)-2n2(-k+6)(-k-6)
(x+10)(x-10)(6x-3y)(6x+3y)
(8+2x)(8-2x)9x2-(y+2x)(y-2x)
(8-8a)(8+8a)(0.5x+0.2)(0.5x-0.2)
(a+10)(a-10)(x+9)(x-9)(x2+81)
(ab+6)(ab-6)(a+4)(a-4)(a2+16)
(-3m-4n)(-3m+4n)(an+5b)(an-5b)
(x+8y)(x-8y)(7mn-5n)(7mn+5n)
(y+9z)(y-9z)(-3x-4y)(-3x+4y)
(3x+8)(3x-8)(8x-y)(8x+y)
(-4x+9)(-4x-9)(6a-2b)(6a+2b)
(3-7a)(3+7a)(0.5x+0.9)(0.5x-0.9)
(2m-5n)(2m+5n)-3n2(-6k+5)(-6k-5)
(5x+6)(5x-6)(x-8y)(x+8y)
(8+3x)(8-3x)6x2+(y+4x)(y-4x)
(7-3a)(7+3a)(0.2x+0.1)(0.2x-0.1)
(a+5)(a-5)(x+9)(x-9)(x2+81)
(ab+7)(ab-7)(a+2)(a-2)(a2+4)
(-5m-3n)(-5m+3n)(an+2b)(an-2b)
(x+3y)(x-3y)(3mn-3n)(3mn+3n)
(y+8z)(y-8z)(-x-y)(-x+y)
(3x+3)(3x-3)(7x-9y)(7x+9y)
(-x+4)(-x-4)(5a-4b)(5a+4b)
(8-9a)(8+9a)(0.1x+0.8)(0.1x-0.8)
(7m-5n)(7m+5n)+4n2(-5k+2)(-5k-2)
(9x+9)(9x-9)(4x-5y)(4x+5y)
(2+6x)(2-6x)6x2+(y+2x)(y-2x)
(4-8a)(4+8a)(0.3x+0.9)(0.3x-0.9)
(a+1)(a-1)(x+2)(x-2)(x2+4)
(ab+6)(ab-6)(a+8)(a-8)(a2+64)
(-5m-2n)(-5m+2n)(an+8b)(an-8b)
(x+6y)(x-6y)(3mn-4n)(3mn+4n)
(y+8z)(y-8z)(-6x-2y)(-6x+2y)
(8x+3)(8x-3)(6x-5y)(6x+5y)
(-9x+4)(-9x-4)(2a-3b)(2a+3b)
(2-5a)(2+5a)(0.4x+0.8)(0.4x-0.8)
(4m-2n)(4m+2n)-6n2(-4k+7)(-4k-7)
(5x+9)(5x-9)(8x-9y)(8x+9y)
(8+5x)(8-5x)4x2-(y+5x)(y-5x)
(10-4a)(10+4a)(0.4x+0.5)(0.4x-0.5)
(a+6)(a-6)(x+9)(x-9)(x2+81)
(ab+3)(ab-3)(a+5)(a-5)(a2+25)
(-7m-4n)(-7m+4n)(an+b)(an-b)
(x+2y)(x-2y)(8mn-2n)(8mn+2n)
(y+6z)(y-6z)(-6x-3y)(-6x+3y)
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