初一数学下册平方差公式专项练习 58.docx

1、初一数学下册平方差公式专项练习 58(5x9)(5x9) (7x5y)(7x5y) (4x2)(4x2) (a2b)(a2b) (86a)(86a) (0.5x0.5)(0.5x0.5) (8m2n)(8m2n)3n2 (k9)(k9) (9x2)(9x2) (6x4y)(6x4y) (10x)(10x) 3x2 (y4x)(y4x) (14a)(14a) (0.4x0.7)(0.4x0.7) (a1)(a1) (x2 )(x2)(x24)(ab9)(ab9) (a4 )(a4)(a216)(7m4n)(7m4n) (an3b)(an3b) (x4y)(x4y) (6mn5n)(6mn5n)

2、(y5z)(y5z) (7x4y)(7x4y) (2x2)(2x2) (4x5y)(4x5y) (3x5)(3x5) (8a5b)(8a5b) (102a)(102a) (0.9x0.3)(0.9x0.3) (7m4n)(7m4n)7n2 (4k4)(4k4) (8x7)(8x7) (9x3y)(9x3y) (86x)(86x) 6x2 (y6x)(y6x) (48a)(48a) (0.1x0.7)(0.1x0.7) (a2)(a2) (x3 )(x3)(x29)(ab8)(ab8) (a6 )(a6)(a236)(4m5n)(4m5n) (an2b)(an2b) (x3y)(x3y) (8m

3、n4n)(8mn4n) (y4z)(y4z) (8x5y)(8x5y) (3x8)(3x8) (8x9y)(8x9y) (6x9)(6x9) (2a2b)(2a2b) (14a)(14a) (0.5x0.6)(0.5x0.6) (9m2n)(9m2n)2n2 (8k9)(8k9) (7x3)(7x3) (7x2y)(7x2y) (85x)(85x) 2x2 (y5x)(y5x) (27a)(27a) (0.3x0.8)(0.3x0.8) (a6)(a6) (x4 )(x4)(x216)(ab4)(ab4) (a9 )(a9)(a281)(3m2n)(3m2n) (an5b)(an5b) (x7

4、y)(x7y) (mn5n)(mn5n) (y3z)(y3z) (9x4y)(9x4y) (7x1)(7x1) (4x4y)(4x4y) (6x3)(6x3) (5a2b)(5a2b) (12a)(12a) (0.9x0.8)(0.9x0.8) (9m4n)(9m4n)6n2 (4k4)(4k4) (3x1)(3x1) (9xy)(9xy) (38x)(38x) 5x2 (y3x)(y3x) (78a)(78a) (0.7x0.5)(0.7x0.5) (a6)(a6) (x3 )(x3)(x29)(ab8)(ab8) (a2 )(a2)(a24)(9mn)(9mn) (an4b)(an4b)

5、(x2y)(x2y) (3mn4n)(3mn4n) (y6z)(y6z) (5x5y)(5x5y) (x4)(x4) (4x5y)(4x5y) (5x2)(5x2) (6a2b)(6a2b) (73a)(73a) (0.8x0.9)(0.8x0.9) (7m2n)(7m2n)4n2 (8k10)(8k10) (x6)(x6) (5x9y)(5x9y) (23x)(23x) 9x2 (y4x)(y4x) (39a)(39a) (0.5x0.4)(0.5x0.4) (a7)(a7) (x6 )(x6)(x236)(ab1)(ab1) (a3 )(a3)(a29)(m3n)(m3n) (an4b)(

6、an4b) (x6y)(x6y) (6mnn)(6mnn) (y2z)(y2z) (4xy)(4xy) (9x3)(9x3) (x3y)(x3y) (6x7)(6x7) (3ab)(3ab) (5a)(5a) (0.7x0.1)(0.7x0.1) (m4n)(m4n)9n2 (5k9)(5k9) (4x3)(4x3) (7x3y)(7x3y) (79x)(79x) 2x2 (y3x)(y3x) (88a)(88a) (0.9x1)(0.9x1) (a8)(a8) (x4 )(x4)(x216)(ab6)(ab6) (a8 )(a8)(a264)(9mn)(9mn) (an6b)(an6b) (

7、x2y)(x2y) (6mn3n)(6mn3n) (y7z)(y7z) (3x4y)(3x4y) (8x6)(8x6) (6x7y)(6x7y) (6x4)(6x4) (6a3b)(6a3b) (74a)(74a) (0.5x0.1)(0.5x0.1) (m2n)(m2n)4n2 (6k2)(6k2) (3x3)(3x3) (5x6y)(5x6y) (5x)(5x) 6x2 (y4x)(y4x) (83a)(83a) (0.1x1)(0.1x1) (a2)(a2) (x3 )(x3)(x29)(ab7)(ab7) (a2 )(a2)(a24)(2m5n)(2m5n) (an8b)(an8b)

8、(x7y)(x7y) (mnn)(mnn) (y4z)(y4z) (4x2y)(4x2y) (9x2)(9x2) (6x4y)(6x4y) (5x8)(5x8) (a3b)(a3b) (62a)(62a) (0.6x0.6)(0.6x0.6) (5m3n)(5m3n)4n2 (9k4)(9k4) (7x2)(7x2) (4x5y)(4x5y) (10x)(10x) 5x2 (y2x)(y2x) (83a)(83a) (0.9x0.5)(0.9x0.5) (a2)(a2) (x3 )(x3)(x29)(ab5)(ab5) (a5 )(a5)(a225)(6m3n)(6m3n) (an3b)(an

9、3b) (x9y)(x9y) (9mn2n)(9mn2n) (y4z)(y4z) (8x5y)(8x5y) (3x10)(3x10) (9x7y)(9x7y) (x2)(x2) (7a5b)(7a5b) (6a)(6a) (0.8x1)(0.8x1) (6m3n)(6m3n)2n2 (2k9)(2k9) (6x7)(6x7) (9x4y)(9x4y) (28x)(28x) 4x2 (y3x)(y3x) (49a)(49a) (0.2x0.7)(0.2x0.7) (a7)(a7) (x2 )(x2)(x24)(ab3)(ab3) (a4 )(a4)(a216)(mn)(mn) (an5b)(an5b) (x6y)(x6y) (mn4n)(mn4n) (y2z)(y2z) (7xy)(7xy) (9x2)(9x2) (9x5y)(9x5y) (7x8)(7x8) (a5b)(a5b) (62a)(62a) (0.5x0.8)(0.5x0.8) (m4n)(m4n)6n2 (7k4)(7k4) (7x10)(7x10) (4x7y)(4x7y) (83x)(83x) 7x2 (y3x)(y3x)