ÔËÓÃÌṫÒòʽ·¨·Ö½âÒòʽµÄ¼¸ÖÖ²ßÂÔ

ÌṫÒòʽ·¨ÊÇ·Ö½âÒòʽÊ×ÏÈÒª¿¼Âǵķ½·¨£¬ÔËÓÃÌṫÒòʽ·¨µÄ¹Ø¼üÊÇ׼ȷÕÒ³ö¶àÏîʽ¸÷ÏîµÄ¹«Òòʽ£®ÏÂÃæ½áºÏʵÀý½éÉܼ¸ÖÖ³£¼ûµÄÔËÓÃÌṫÒòʽ·¨·Ö½âÒòʽµÄ²ßÂÔ£® Ò»¡¢ÌáϵÊý

Àý1 ·Ö½âÒòʽ£º8(m?n)£­24m(m?n)£«18m ½â ԭʽ£½2£Û4(m?n)£­12m(m?n)£«9m£Ý £½2£û[2(m?n)]£­12m(m?n)£«(3m)£ý £½2[2(m?n)?3m]£½2(2n?m)£®

µãÆÀ£ºµ±ÏµÊýÊÇÕûÊýϵÊýʱ£¬ÒªÌá³ö¶àÏîʽ¸÷ÏîϵÊýµÄ×î´ó¹«Ô¼Êý£® Àý2 ·Ö½âÒòʽ£º

222222221212x£­y 273½â ԭʽ£½

1121112£¨x£­y£©£½£¨x£­y£©£¨x£«y£©£® 39333»òԭʽ£½

112£¨x2£­9y£©£½£¨x£­3y£©£¨x£«3y£©£® 272711Ò²¿ÉÒÔÌᣬ327µãÆÀ£ºµ±ÏµÊýÊÇ·ÖÊýϵÊýʱ£¬ËùÌáÈ¡µÄϵÊýÊÇ¿ÉÒÔ²»ÏàͬµÄ£¬ÈçÀý2ÖпÉÒÔÌáÖ»ÒªÌáȡϵÊýºó£¬ÏÂÒ»²½ÄܼÌÐø·Ö½â¼´¿É£® ¶þ¡¢Ìáµ¥Ïîʽ

Àý3 ·Ö½âÒòʽ£º£­2a3b£«8a2b2£­8ab3

2½â ԭʽ£½£­2ab£¨a2£­4ab£«4b2£©£½£­2ab(a?2b)£®

Èý¡¢Ìá¶àÏîʽ

Àý4 ·Ö½âÒòʽ£º£¨x£­3y£©£¨a£«b£©£«£¨3x£­2y£©£¨a£«b£© ½â ԭʽ£½£¨a£«b£©£Û£¨x£­3y£©£«£¨3x£­2y£©£Ý £½£¨a£«b£©£¨4x£­5y£©£® ËÄ¡¢Ïȱä·ûºÅ£¬ÔÙÌṫÒòʽ

Àý5 ·Ö½âÒòʽ£º9x£¨a£­2b£©£«4£¨2b£­a£© ½â ԭʽ£½9x£¨a£­2b£©£­4£¨a£­2b£© £½£¨a£­2b£©£¨9x£­4£©

£½£¨a£­2b£©£¨3x£«2£©£¨3x£­2£©£® µãÆÀ£º±ä·ûºÅʱ¾­³£Óõ½ÒÔϺãµÈʽ£º

£¨1£©a£­b£½£­£¨b£­a£©£»£¨2£©(a?b)£½(b?a) £»£¨3£©(a?b)£½£­(b?a)

2233222Îå¡¢Á¬ÐøÌṫÒòʽ

Àý6 ·Ö½âÒòʽ£ºm£¨5ax£«ay£­1£©£­m£¨3ax£­ay£­1£© ½â ԭʽ£½m£Û£¨5ax£«ay£­1£©£­£¨3ax£­ay£­1£©£Ý £½m£¨2ax£«2ay£© £½2am£¨x£«y£©

µãÆÀ£º·Ö½âÒòʽһ¶¨Òª·Ö½âµ½Ã¿Ò»¸öÒòʽ¶¼²»ÄÜ·Ö½âΪֹ¡£ Áù¡¢ÏÈ·Ö×飬ÔÙÌṫÒòʽ

Àý7 ·Ö½âÒòʽ£ºx2£­y£­x£­y ½â ԭʽ£½£¨x2£­y£©£­£¨x£«y£© £½£¨x£«y£©£¨x£­y£©£­£¨x£«y£© £½£¨x£«y£©£¨x£­y£­1£©£®

22