2a+3ab+b - a - ab - 2b,ÆäÖÐa - b=2,ab...

=2£¨a2-b2)-(a2-b2) 2ab=2x2-2 2x-3=-2ԭʽºÏ²¢Í¬ÀàÏîµÈÓÚa·½+2ab-b·½£¬ËùÒÔÓ¦¸ÃµÈÓÚ-4a²+2ab-b²=2-3=-1

¹þ¶û±õÐÔ²¡×¨¿ÆÕý¹æÒ½ÔºÊ®¼ÑÅÅÃû - ¹þ¶û±õÄļÒÐÔ²¡Ò½Ôº¿´µÄºÃ...

¹þ¶û±õµ±µØÖÎÁÆÐÔ²¡µÄÒ½Ôº´óÈ«-ÐÔ²¡Ò½ÔºÅÅÃû°ñµ¥£º1¡¢¹þ¶û±õÊеÚÎåÒ½Ôº£¬2¡¢¹þ¶û±õ¼Ã¿µÒ½Ôº£¬3¡¢¹þ¶û±õÒ½¿Æ´óѧ¸½ÊôµÚ¶þÒ½ÔºµÈÒ½ÔºÊÇרҵÖÎÁÆÐÔ²¡...

¹þ¶û±õÐÔ²¡×¨¿ÆÕý¹æÒ½ÔºÊ®¼ÑÅÅÃû - ¹þ¶û±õÄļÒÐÔ²¡Ò½Ôº...

¹þ¶û±õµ±µØÖÎÁÆÐÔ²¡µÄÒ½Ôº´óÈ«-ÐÔ²¡Ò½ÔºÅÅÃû°ñµ¥:1¡¢¹þ¶û±õÊеÚÎåÒ½Ôº,2¡¢¹þ¶û±õ¼Ã¿µÒ½Ôº,3¡¢¹þ¶û±õÒ½¿Æ´óѧ¸½ÊôµÚ¶þÒ½ÔºµÈÒ½ÔºÊÇרҵÖÎÁÆÐÔ²¡µÄÒ½Ôº¡£¿ªÊ¼Ö¢×´Îªµ­ºì»òÎÛºìÉ«ËÚ×´´óС׸...

Ïà¹ØËÑË÷