ÌâÄ¿ÄÚÈÝ
ÔĶÁijͬѧ½â·Öʽ·½³ÌµÄ¾ßÌå¹ý³Ì£¬»Ø´ðºóÃæÎÊÌ⣮½â·½³Ì
+
=1£®
½â£ºÔ·½³Ì¿É»¯Îª£º
¼ìÑ飺µ±x=-6ʱ£¬¸÷·Öĸ¾ù²»Îª0£¬¡àx=-6ÊÇÔ·½³ÌµÄ½âÇë»Ø´ð£º
£¨1£©µÚ¢Ù²½±äÐεÄÒÀ¾ÝÊÇ
£¨2£©´ÓµÚ
£¨3£©Ô·½³ÌµÄ½âΪ
2 |
x |
x |
x-3 |
½â£ºÔ·½³Ì¿É»¯Îª£º
|
¼ìÑ飺µ±x=-6ʱ£¬¸÷·Öĸ¾ù²»Îª0£¬¡àx=-6ÊÇÔ·½³ÌµÄ½âÇë»Ø´ð£º
£¨1£©µÚ¢Ù²½±äÐεÄÒÀ¾ÝÊÇ
µÈʽµÄ»ù±¾ÐÔÖÊ
µÈʽµÄ»ù±¾ÐÔÖÊ
£»£¨2£©´ÓµÚ
¢Û
¢Û
²½¿ªÊ¼³öÏÖÁË´íÎó£¬ÕâÒ»²½´íÎóµÄÔÒòÊÇÒÆÏî²»±äºÅ
ÒÆÏî²»±äºÅ
£»£¨3£©Ô·½³ÌµÄ½âΪ
x=
6 |
5 |
x=
£®6 |
5 |
·ÖÎö£º£¨1£©µÚ¢Ù±ä»»µÄÒÀ¾ÝΪµÈʽµÄ»ù±¾ÐÔÖÊ£»
£¨2£©´ÓµÚ¢Û²½¿ªÊ¼³öÏÖÁË´íÎ󣬳öÏÖ´íÎóµÄÔÒòΪÒÆÏî²»±äºÅ£»
£¨3£©·Öʽ·½³ÌÈ¥·Öĸת»¯ÎªÕûʽ·½³Ì£¬Çó³öÕûʽ·½³ÌµÄ½âµÃµ½xµÄÖµ£¬¾¼ìÑé¼´¿ÉµÃµ½·Öʽ·½³ÌµÄ½â£®
£¨2£©´ÓµÚ¢Û²½¿ªÊ¼³öÏÖÁË´íÎ󣬳öÏÖ´íÎóµÄÔÒòΪÒÆÏî²»±äºÅ£»
£¨3£©·Öʽ·½³ÌÈ¥·Öĸת»¯ÎªÕûʽ·½³Ì£¬Çó³öÕûʽ·½³ÌµÄ½âµÃµ½xµÄÖµ£¬¾¼ìÑé¼´¿ÉµÃµ½·Öʽ·½³ÌµÄ½â£®
½â´ð£º½â£º£¨1£©µÚ¢Ù²½±äÐεÄÒÀ¾ÝÊǵÈʽµÄ»ù±¾ÐÔÖÊ£»
£¨2£©´ÓµÚ¢Û²½³öÏÖ´íÎ󣬴íÎóµÄÔÒòÊÇÒÆÏî²»±äºÅ£»
£¨3£©·Öʽ·½³ÌÈ¥·ÖĸµÃ£º2£¨x-3£©+x2=x£¨x-3£©£¬
È¥À¨ºÅµÃ£º2x-6+x2=x2-3x£¬
½âµÃ£ºx=
£¬
¾¼ìÑéÊÇ·Öʽ·½³ÌµÄ½â£®
£¨2£©´ÓµÚ¢Û²½³öÏÖ´íÎ󣬴íÎóµÄÔÒòÊÇÒÆÏî²»±äºÅ£»
£¨3£©·Öʽ·½³ÌÈ¥·ÖĸµÃ£º2£¨x-3£©+x2=x£¨x-3£©£¬
È¥À¨ºÅµÃ£º2x-6+x2=x2-3x£¬
½âµÃ£ºx=
6 |
5 |
¾¼ìÑéÊÇ·Öʽ·½³ÌµÄ½â£®
µãÆÀ£º´ËÌ⿼²éÁ˽â·Öʽ·½³Ì£¬½â·Öʽ·½³ÌµÄ»ù±¾Ë¼ÏëÊÇ¡°×ª»¯Ë¼Ï롱£¬°Ñ·Öʽ·½³Ìת»¯ÎªÕûʽ·½³ÌÇó½â£®½â·Öʽ·½³ÌÒ»¶¨×¢ÒâÒªÑé¸ù£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿