1、初一数学下册平方差公式专项练习 12(8x1)(8x1) (7x3y)(7x3y) (2x4)(2x4) (4a3b)(4a3b) (73a)(73a) (0.2x0.2)(0.2x0.2) (9m2n)(9m2n)6n2 (3k10)(3k10) (9x9)(9x9) (4x8y)(4x8y) (35x)(35x) 5x2 (y2x)(y2x) (72a)(72a) (0.5x0.8)(0.5x0.8) (a2)(a2) (x3 )(x3)(x29)(ab7)(ab7) (a6 )(a6)(a236)(m3n)(m3n) (anb)(anb) (x2y)(x2y) (8mn3n)(8mn3n
2、) (y2z)(y2z) (8x4y)(8x4y) (x2)(x2) (4x2y)(4x2y) (4x6)(4x6) (a5b)(a5b) (76a)(76a) (0.5x0.3)(0.5x0.3) (4mn)(4mn)2n2 (7k3)(7k3) (2x5)(2x5) (6x4y)(6x4y) (58x)(58x) 4x2 (y4x)(y4x) (77a)(77a) (0.9x0.5)(0.9x0.5) (a6)(a6) (x9 )(x9)(x281)(ab7)(ab7) (a2 )(a2)(a24)(2mn)(2mn) (an9b)(an9b) (x5y)(x5y) (mn3n)(mn3n
3、) (y7z)(y7z) (5x4y)(5x4y) (x9)(x9) (2x6y)(2x6y) (8x8)(8x8) (3ab)(3ab) (83a)(83a) (0.3x0.6)(0.3x0.6) (mn)(mn)6n2 (9k10)(9k10) (7x3)(7x3) (3x5y)(3x5y) (7x)(7x) 2x2 (y5x)(y5x) (63a)(63a) (0.7x0.3)(0.7x0.3) (a10)(a10) (x7 )(x7)(x249)(ab5)(ab5) (a3 )(a3)(a29)(8m5n)(8m5n) (an6b)(an6b) (x2y)(x2y) (8mn5n)(8
4、mn5n) (y2z)(y2z) (5x2y)(5x2y) (x8)(x8) (2x4y)(2x4y) (9x7)(9x7) (8a5b)(8a5b) (84a)(84a) (0.8x0.4)(0.8x0.4) (6m3n)(6m3n)7n2 (6k5)(6k5) (5x4)(5x4) (3xy)(3xy) (810x)(810x) 3x2 (y4x)(y4x) (58a)(58a) (0.7x0.5)(0.7x0.5) (a8)(a8) (x4 )(x4)(x216)(ab10)(ab10) (a5 )(a5)(a225)(m5n)(m5n) (an8b)(an8b) (x8y)(x8y)
5、(5mn2n)(5mn2n) (y2z)(y2z) (7x5y)(7x5y) (5x1)(5x1) (3x2y)(3x2y) (4x8)(4x8) (2a2b)(2a2b) (83a)(83a) (0.7x0.9)(0.7x0.9) (5mn)(5mn)8n2 (k8)(k8) (2x5)(2x5) (3x8y)(3x8y) (23x)(23x) 9x2 (y6x)(y6x) (47a)(47a) (0.1x0.7)(0.1x0.7) (a3)(a3) (x4 )(x4)(x216)(ab6)(ab6) (a9 )(a9)(a281)(4m2n)(4m2n) (an3b)(an3b) (x6y
6、)(x6y) (5mnn)(5mnn) (y5z)(y5z) (3x3y)(3x3y) (5x2)(5x2) (5x8y)(5x8y) (4x2)(4x2) (7a4b)(7a4b) (107a)(107a) (0.1x0.5)(0.1x0.5) (5m2n)(5m2n)4n2 (4k7)(4k7) (8x7)(8x7) (3x9y)(3x9y) (22x)(22x) 3x2 (y2x)(y2x) (23a)(23a) (0.3x0.3)(0.3x0.3) (a7)(a7) (x9 )(x9)(x281)(ab7)(ab7) (a9 )(a9)(a281)(9m5n)(9m5n) (an7b)
7、(an7b) (x8y)(x8y) (8mnn)(8mnn) (y4z)(y4z) (6x5y)(6x5y) (9x4)(9x4) (8x4y)(8x4y) (6x2)(6x2) (8a5b)(8a5b) (10a)(10a) (0.2x0.5)(0.2x0.5) (7m5n)(7m5n)7n2 (9k1)(9k1) (x10)(x10) (6x8y)(6x8y) (67x)(67x) 8x2 (y5x)(y5x) (23a)(23a) (0.2x0.2)(0.2x0.2) (a7)(a7) (x5 )(x5)(x225)(ab6)(ab6) (a8 )(a8)(a264)(7m5n)(7m5
8、n) (an2b)(an2b) (x2y)(x2y) (2mn3n)(2mn3n) (y9z)(y9z) (8x3y)(8x3y) (5x10)(5x10) (3x4y)(3x4y) (9x6)(9x6) (3a3b)(3a3b) (78a)(78a) (0.5x0.8)(0.5x0.8) (3m5n)(3m5n)3n2 (4k5)(4k5) (9x5)(9x5) (5x7y)(5x7y) (12x)(12x) 9x2 (y5x)(y5x) (16a)(16a) (0.3x0.6)(0.3x0.6) (a3)(a3) (x4 )(x4)(x216)(ab4)(ab4) (a9 )(a9)(a2
9、81)(3m3n)(3m3n) (an5b)(an5b) (x9y)(x9y) (9mn4n)(9mn4n) (y9z)(y9z) (8x3y)(8x3y) (9x9)(9x9) (8x8y)(8x8y) (3x1)(3x1) (8a4b)(8a4b) (13a)(13a) (0.8x0.5)(0.8x0.5) (6m4n)(6m4n)5n2 (7k10)(7k10) (6x4)(6x4) (5x5y)(5x5y) (24x)(24x) 6x2 (y3x)(y3x) (24a)(24a) (0.4x0.3)(0.4x0.3) (a1)(a1) (x7 )(x7)(x249)(ab4)(ab4) (a2 )(a2)(a24)(4m5n)(4m5n) (an9b)(an9b) (x3y)(x3y) (2mn5n)(2mn5n) (y6z)(y6z) (6x5y)(6x5y) (8x7)(8x7) (3x3y)(3x3y) (x8)(x8) (3a2b)(3a2b) (4a)(4a) (0.7x0.2)(0.7x0.2) (9m3n)(9m3n)4n2 (5k1)(5k1) (x7)(x7) (7x3y)(7x3y) (17x)(17x) 7x2 (y4x)(y4x)
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