ÌâÄ¿ÄÚÈÝ


ÒÑÖªÅ×ÎïÏßy£½ax 2£«bx£«c£¨a£¼0£©ÓëxÖá½»ÓÚµãA£¨8£¬0£©ºÍB£¨£­12£¬0£©£¬ÓëyÖá½»ÓÚµãC£¨0£¬6£©£®

£¨1£©Çó¸ÃÅ×ÎïÏߵĽâÎöʽ£º

£¨2£©µãDÔÚÏß¶ÎABÉÏÇÒAD£½AC£¬Èô¶¯µãM´ÓA³ö·¢ÑØÏß¶ÎABÒÔÿÃë1¸öµ¥Î»³¤¶ÈµÄËÙ¶ÈÔÈËÙÔ˶¯£¬Í¬Ê±ÁíÒ»¶¯µãNÒÔijһËÙ¶È´ÓB³ö·¢ÑØÏß¶ÎBCÔÈËÙÔ˶¯£¬ÎÊÊÇ·ñ´æÔÚijһʱ¿Ìt£¨Ã룩£¬Ê¹Ïß¶ÎMN±»Ö±ÏßCD´¹Ö±Æ½·Ö£¿Èô´æÔÚ£¬ÇëÇó³ö´ËʱµÄʱ¼ätºÍµãNµÄÔ˶¯ËÙ¶È£»Èô²»´æÔÚ£¬Çë˵Ã÷ÀíÓÉ£»21·ÊÀ¼Í*½ÌÓýÍø

£¨3£©ÔÚµÚ¶þÏóÏÞµÄÅ×ÎïÏßÉÏȡһµãP£¬Ê¹µÃS¡÷PCA£½S¡÷PCB£¬ÔÙÔÚÅ×ÎïÏßÉÏÕÒÒ»µãQ£¨²»Óë

µãA¡¢B¡¢CÖØºÏ£©£¬Ê¹µÃtan¡ÏPBQ£½£¬ÇóµãQµÄ×ø±ê£®

 



£¨1£©y£½£­(x£­8)(x£«12) £½£­x2£­x£«6¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­(2·Ö)

£¨2£©ÓÉÌâÒ⣬AD£½AC£½10£¬µãDµÄ×ø±êÊÇ£¨£­2£¬0£©£¬ÓÐBD£½AD¡­¡­¡­¡­¡­¡­(3·Ö)

     ÈôCD´¹Ö±Æ½·ÖMN£¬DN£½DM£¬¡ÏNDC£½¡ÏMDC£½¡ÏACD£¬¡àDN¡ÎAC¡­¡­¡­(4·Ö)

     ÓÚÊÇBN£½CN£¬DNÊÇÖÐλÏߣ¬DN£½£½5£¬¡àAM£½t£½5¡­¡­¡­¡­¡­¡­¡­¡­¡­(5·Ö)

     ¶øBN£½5VN£½6£¬µãNµÄÔ˶¯ËÙ¶ÈÊÇ ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­(6·Ö)

£¨3£©ÓÉS¡÷PCA£½S¡÷PCB£¬µÃPC¡ÎAB£¬ÔòP£¨£­4£¬6£©¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­(7·Ö)

Èôtan¡ÏPBQ£½£¬Ôò¡ÏPBQ£½¡ÏCBA£¬ÓÚÊÇ¡ÏPBC£½¡ÏQBA£¬×÷PG¡ÍBC£¬QH¡ÍAB£¬

     ×¢Òâµ½PG£½£¬CG£½£¬BG£½£¬Ôò£½¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­(8·Ö)

Q£¨x£¬£­x2£­x£«6£©£¬ÓÉ£½£¬½âµÃx£½»ò£­12£¨ÉáÈ¥£©¡­¡­(9·Ö)

    ¹ÊµãQµÄ×ø±êÊÇ£¨£¬£©¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­(10·Ö)

 



Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø