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1、1m2(pq)pq; 2a(abbcac)abc;3x42y42x3yxy3;4abc(a2b2c2)a3bc2ab2c2;5a2(bc)b2(ca)c2(ab);6(x22x)22x(x2)1;7(xy)212(yx)z36z2;8x24ax8ab4b2;9. a49a2b210. a2ab2b 11(x1)29(x1)2;1216x281;13ab2ac24ac4a;149x230x25;15xy62x3y ;16(xy)(abc)(xy)(bca) ;17x220x100;184x212x5 ;192ax23x2ax3;20x24xy3y2;21x218x144;22x42x28;23m
2、418m217;24x52x38x;25(x6)(x6)(x6);26(x27x)210(x27x)24;2757(a1)6(a1)2;283(x2)(x5)(x2)(x3);29x2y2x2y24xy1;30x24xax4a ;31x2y2xy;32ax2bx2bxax3a3b;33m42m21;34a2b22acc2;35x2(xy)y2(yx);3625x249;3712x223x;38x24xy4y22x4y35;39m2a24ab4b2;405m5nm22mnn241. x27x30 42.36x260x25 43.12x250x8 44. x24xxy2y4 45. 9x535x34x 46a49a2b2;47. (3ab)24(3ab)(a3b)4(a3b)248. 9x230x2549. x29x1850. x(y2)xy13 / 33 / 3