1、初一数学下册平方差公式专项练习 78(4x2)(4x2) (4x5y)(4x5y) (x2)(x2) (6a2b)(6a2b) (2a)(2a) (0.9x0.6)(0.9x0.6) (mn)(mn)5n2 (7k8)(7k8) (9x3)(9x3) (9x9y)(9x9y) (3x)(3x) 9x2 (y5x)(y5x) (44a)(44a) (0.5x0.5)(0.5x0.5) (a9)(a9) (x2 )(x2)(x24)(ab5)(ab5) (a8 )(a8)(a264)(2m3n)(2m3n) (an6b)(an6b) (x7y)(x7y) (4mn4n)(4mn4n) (y5z)(
2、y5z) (6x5y)(6x5y) (7x9)(7x9) (5x6y)(5x6y) (x6)(x6) (9a3b)(9a3b) (49a)(49a) (0.3x0.1)(0.3x0.1) (3m2n)(3m2n)3n2 (3k10)(3k10) (6x1)(6x1) (5x4y)(5x4y) (25x)(25x) 5x2 (y3x)(y3x) (42a)(42a) (0.1x0.9)(0.1x0.9) (a3)(a3) (x1 )(x1)(x21)(ab1)(ab1) (a4 )(a4)(a216)(5m5n)(5m5n) (anb)(anb) (x2y)(x2y) (7mnn)(7mnn)
3、(y9z)(y9z) (5x4y)(5x4y) (3x1)(3x1) (5x6y)(5x6y) (6x2)(6x2) (6a4b)(6a4b) (18a)(18a) (0.2x0.2)(0.2x0.2) (4m5n)(4m5n)6n2 (3k3)(3k3) (4x5)(4x5) (2x7y)(2x7y) (44x)(44x) 8x2 (y3x)(y3x) (410a)(410a) (0.2x0.5)(0.2x0.5) (a6)(a6) (x9 )(x9)(x281)(ab2)(ab2) (a8 )(a8)(a264)(5mn)(5mn) (an9b)(an9b) (x3y)(x3y) (9mn
4、4n)(9mn4n) (y7z)(y7z) (7xy)(7xy) (9x3)(9x3) (9x8y)(9x8y) (2x4)(2x4) (8a5b)(8a5b) (66a)(66a) (0.1x0.8)(0.1x0.8) (6mn)(6mn)3n2 (7k3)(7k3) (7x8)(7x8) (x8y)(x8y) (69x)(69x) 8x2 (y3x)(y3x) (79a)(79a) (0.2x0.4)(0.2x0.4) (a7)(a7) (x3 )(x3)(x29)(ab2)(ab2) (a3 )(a3)(a29)(4m5n)(4m5n) (an4b)(an4b) (x2y)(x2y) (
5、4mn3n)(4mn3n) (y4z)(y4z) (2x2y)(2x2y) (x6)(x6) (7x5y)(7x5y) (x4)(x4) (4a4b)(4a4b) (84a)(84a) (0.9x1)(0.9x1) (8m2n)(8m2n)2n2 (7k2)(7k2) (x7)(x7) (3x3y)(3x3y) (22x)(22x) 2x2 (y4x)(y4x) (710a)(710a) (0.9x1)(0.9x1) (a9)(a9) (x4 )(x4)(x216)(ab5)(ab5) (a8 )(a8)(a264)(5m5n)(5m5n) (an5b)(an5b) (x2y)(x2y) (2
6、mn4n)(2mn4n) (y6z)(y6z) (7x3y)(7x3y) (2x9)(2x9) (2x2y)(2x2y) (7x6)(7x6) (ab)(ab) (35a)(35a) (0.7x0.4)(0.7x0.4) (2m2n)(2m2n)5n2 (9k10)(9k10) (5x6)(5x6) (5xy)(5xy) (34x)(34x) 7x2 (y5x)(y5x) (17a)(17a) (0.8x0.9)(0.8x0.9) (a4)(a4) (x8 )(x8)(x264)(ab3)(ab3) (a1 )(a1)(a21)(6m3n)(6m3n) (anb)(anb) (x3y)(x3y
7、) (6mnn)(6mnn) (y9z)(y9z) (6x2y)(6x2y) (4x5)(4x5) (2x9y)(2x9y) (4x9)(4x9) (7a3b)(7a3b) (62a)(62a) (0.3x0.9)(0.3x0.9) (5m5n)(5m5n)7n2 (2k8)(2k8) (x6)(x6) (2x6y)(2x6y) (14x)(14x) 7x2 (y5x)(y5x) (27a)(27a) (0.3x0.6)(0.3x0.6) (a2)(a2) (x7 )(x7)(x249)(ab7)(ab7) (a9 )(a9)(a281)(9m5n)(9m5n) (an2b)(an2b) (x
8、4y)(x4y) (8mn3n)(8mn3n) (y2z)(y2z) (4x2y)(4x2y) (4x2)(4x2) (x6y)(x6y) (3x1)(3x1) (a3b)(a3b) (6a)(6a) (0.6x0.7)(0.6x0.7) (3m5n)(3m5n)8n2 (5k1)(5k1) (4x9)(4x9) (x7y)(x7y) (68x)(68x) 9x2 (y5x)(y5x) (54a)(54a) (0.3x0.7)(0.3x0.7) (a9)(a9) (x3 )(x3)(x29)(ab8)(ab8) (a9 )(a9)(a281)(6m3n)(6m3n) (anb)(anb) (x
9、8y)(x8y) (mn2n)(mn2n) (y5z)(y5z) (3x2y)(3x2y) (3x5)(3x5) (8x3y)(8x3y) (7x6)(7x6) (8a2b)(8a2b) (52a)(52a) (0.9x0.8)(0.9x0.8) (5m2n)(5m2n)6n2 (6k1)(6k1) (2x6)(2x6) (xy)(xy) (104x)(104x) 4x2 (y3x)(y3x) (310a)(310a) (0.5x0.1)(0.5x0.1) (a2)(a2) (x2 )(x2)(x24)(ab8)(ab8) (a7 )(a7)(a249)(7m4n)(7m4n) (an9b)(an9b) (x7y)(x7y) (9mn4n)(9mn4n) (y5z)(y5z) (x5y)(x5y) (2x3)(2x3) (7x8y)(7x8y) (x3)(x3) (7a3b)(7a3b) (79a)(79a) (0.3x1)(0.3x1) (7mn)(7mn)9n2 (8k6)(8k6) (9x2)(9x2) (9x7y)(9x7y) (108x)(108x) 9x2 (y2x)(y2x)
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