十字相乘法习题 22221.x3x2 2.x6x5 3.x12x11 4.x18x17 22225.x4x3 6.x4x3 7.x2x3 8.x2x3 22229.x7x6 10.x5x6 11.xx6 12.xx6 2424213.2526aa 14.xx20 15.x6x8 16. x47x218 2222222217.x3xy2y 18. a9ab14b 19.ax7ax8 20.mn3mn10 22222223221. y13yb36b 22. a10a9 23. a4a12a 24. xy5xy6x 2225. (ab)4(ab)x3 26. (x2y)3(x2y)10 27. (x24x)27(x24x)12 2222228.(x3)4x 29.(x5x3)(x5x2)6 30.(x1)(x2)(x3)(x4)24 31. 2x2x3 32. 2x25x7 33. 3a22a1 34. 3b214b5 35.2x215x7 36. 3a28a4 37. 5x27x6 38. 6y211y10 39.12x213x3 40.4x224x27 41.5x26x8 42.2x23x1 43.6y213y6 44.3a27a6 45.4n24n15 46.6x2x35 247.5x28x13 48. 15x2x2 49.209y20y 50.5a2b223ab10 51. 3a2b217abxy10x2y2 52. 5x515x3y20xy2 53. 2x(x12)22 2254. 3(x2y)439(x2y)2108 55.x10xy25y6x30y8 54. 3x2y217abxy10a2b2 55. (3x22x1)2(2x23x3)2 本文来源:https://www.wddqw.com/doc/25fbb5a2baf67c1cfad6195f312b3169a451ea0a.html