ÌâÎÄ

»¯¼ò£º £¨1£©£¨2x-y+z-2c+m£©£¨m+y-2x-2c-z£©£» £¨2£©£¨a+3b£©£¨a2-3ab+9b2£©-£¨a-3b£©£¨a2+3ab+9b2£©£» £¨3£©£¨x+y£©2£¨y+z-x£©£¨z+x-y£©+£¨x-y£©2£¨x+y+z£©£¨x+y-z£©£®

ÌâÐÍ£º½â´ðÌâ  ÄѶȣºÖеµ

´ð°¸

£¨1£©£¨2x-y+z-2c+m£©£¨m+y-2x-2c-z£©£¬ =[£¨m-2c£©+£¨2x-y+z£©]?[£¨m-2c£©-£¨2x-y+z£©]£¬ =£¨m-2c£©2-£¨2x-y+z£©2£¬ =m2-4cm+4c2-£¨4x2+y2+z2-4xy+4xz-2yz£©£¬ =m2-4cm+4c2-4x2-y2-z2+4xy-4xz+2yz£» £¨2£©£¨a+3b£©£¨a2-3ab+9b2£©-£¨a-3b£©£¨a2+3ab+9b2£©£¬ =£¨a3+27b3£©-£¨a3-27b3£©£¬ =54b3£» £¨3£©£¨x+y£©2£¨y+z-x£©£¨z+x-y£©+£¨x-y£©2£¨x+y+z£©£¨x+y-z£©£¬ =£¨x+y£©2[z-£¨x-y£©][z+£¨x-y£©]+£¨x-y£©2[£¨x+y£©+z]¡Á[£¨x+y£©-z]£¬ =£¨x+y£©2[z2-£¨x-y£©2]+£¨x-y£©2[£¨x+y£©2-z2]£¬ =£¨x+y£©2z2-£¨x-y£©2z2£¬ =4xyz2£®

¾Ýר¼ÒȨÍþ·ÖÎö£¬ÊÔÌâ¡°»¯¼ò£º£¨1£©£¨2x-y+z-2c+m£©£¨m+y-2x-2c-z£©£»£¨2£©£¨a+3b£©£¨a2-3ab+9b2£©-£¨a..¡±Ö÷Òª¿¼²éÄã¶Ô  ÕûʽµÄ¼Ó¼õ³Ë³ý»ìºÏÔËËã  µÈ¿¼µãµÄÀí½â¡£¹ØÓÚÕâЩ¿¼µãµÄ¡°µµ°¸¡±ÈçÏ£º

ÕûʽµÄ¼Ó¼õ³Ë³ý»ìºÏÔËËã

¿¼µãÃû³Æ£ºÕûʽµÄ¼Ó¼õ³Ë³ý»ìºÏÔËËã

• ¼Ó·¨¡¢¼õ·¨¡¢³Ë·¨ºÍ³ý·¨£¬Í³³ÆΪËÄÔòÔËËã¡£
  ÆäÖУ¬¼Ó·¨ºÍ¼õ·¨½Ð×öµÚÒ»¼¶ÔËË㣻³Ë·¨ºÍ³ý·¨½Ð×öµÚ¶þ¼¶ÔËËã¡£
  ×¢ÒâÔËËã˳Ðò£¬ÏÈ×ö³Ë·½£¬ÔÙ×ö³Ë³ý£¬×î×ö¼Ó¼õÔËË㣬Èç¹ûÓÐͬÀàÏ¾ÍºÏ²¢Í¬ÀàÏҪÇó½á¹û±ØÐëÊÇ×î¼òÐÎʽ¡£

• »ù±¾ÔËËã˳Ðò£º
  Ö»ÓÐÒ»¼¶ÔËËãʱ£¬´Ó×óµ½ÓÒ¼ÆË㣻
  ÓÐÁ½¼¶ÔËËãʱ£¬Ïȳ˳ý,ºó¼Ó¼õ¡£
  ÓÐÀ¨ºÅʱ£¬ÏÈËãÀ¨ºÅÀïµÄ£»
  Óжà²ãÀ¨ºÅʱ£¬ÏÈËãСÀ¨ºÅÀïµÄ¡£
  ÒªÊÇÓÐƽ·½£¬ÏÈËãƽ·½¡£
  ÔÚ»ìºÏÔËËãÖУ¬ÏÈËãÀ¨ºÅÄÚµÄÊý£¬À¨ºÅ´ÓСµ½´ó£¬È»ºó´Ó¸ß¼¶µ½µÍ¼¶¡£