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1、精选优质文档-倾情为你奉上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
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