ÏÈÔĶÁ£¬ºó½â´ð£º
3
3
-
2
=
3
(
3
+
2
)
(
3
-
2
)(
3
+
2
=
3+
6
(
3
)2-(
2
)2
=3+
6

ÏñÉÏÊö½âÌâ¹ý³ÌÖУ¬
3
-
2
Óë
3
+
2
Ïà³Ë£¬»ý²»º¬Óжþ´Î¸ùʽ£¬ÎÒÃǿɽ«ÕâÁ½¸öʽ×Ó³ÆÎª»¥ÎªÓÐÀí»¯Òòʽ£¬ÉÏÊö½âÌâ¹ý³ÌÒ²³ÆÎª·ÖĸÓÐÀí»¯£¬
£¨1£©
3
 µÄÓÐÀí»¯ÒòʽÊÇ
3
3
£»
5
+2
µÄÓÐÀí»¯ÒòʽÊÇ
5
-2
5
-2
£®
£¨2£©½«ÏÂÁÐʽ×Ó½øÐзÖĸÓÐÀí»¯£º
¢Ù
2
5
=
2
5
5
2
5
5
£»         ¢Ú
3
3+
6
=
3-
6
3-
6
£®
¢ÛÒÑÖªa=
1
2+
3
£¬b=2-
3
£¬±È½ÏaÓëbµÄ´óС¹ØÏµ£®
·ÖÎö£º£¨1£©
3
µÄÓÐÀí»¯ÒòʽÊÇËü±¾Éí£¬
5
+2µÄÓÐÀí»¯Òòʽ·ûºÏƽ·½²î¹«Ê½µÄÌØµãµÄʽ×Ó£®¾Ý´Ë×÷´ð£»
£¨2£©¢Ù·Ö×Ó¡¢·Öĸͬ³ËÒÔ×î¼ò¹«·Öĸ
5
¼´¿É£»¢Ú·Ö×Ó¡¢·Öĸͬ³ËÒÔ×î¼ò¹«·Öĸ3-
6
£¬ÔÙ»¯¼ò¼´¿É£»¢Û°ÑaµÄֵͨ¹ý·ÖĸÓÐÀí»¯»¯¼ò£¬ÔٱȽϣ®
½â´ð£º½â£º£¨1£©¸ù¾Ý
3
-
2
Óë
3
+
2
Ïà³Ë£¬»ý²»º¬Óжþ´Î¸ùʽ£¬ÎÒÃǿɽ«ÕâÁ½¸öʽ×Ó³ÆÎª»¥ÎªÓÐÀí»¯Òòʽ£¬
3
µÄÓÐÀí»¯ÒòʽÊÇ£º
3
£¬
5
+2
µÄÓÐÀí»¯ÒòʽÊÇ£º
5
-2£¬
¹Ê´ð°¸Îª£º
3
£¬
5
-2£»

£¨2£©¢Ù
2
5
=
2
5
5
¡Á
5
=
2
5
5
£¬
¢Ú
3
3+
6
=
3(3-
6
)
(3+
6
)(3-
6
)
=3-
6
£»
¢Û¡ßa=
1
2+
3
=
2-
3
(2+
3
)(2-
3
)
=2-
3
£¬b=2-
3
£¬
¡àa=b£®
µãÆÀ£º´ËÌ⿼²é¶þ´Î¸ùʽµÄ·ÖĸÓÐÀí»¯£¬µ¥Ïî¶þ´Î¸ùʽ£ºÀûÓÃ
a
¡Á
a
=aÀ´È·¶¨£»ÀûÓÃÆ½·½²î¹«Ê½È·¶¨£ºÈ磨
a
+
b
£©£¨
a
-
b
£©=a-b£¬Ôò»¥ÎªÓÐÀí»¯Òòʽ£¬È·¶¨×î¼ò¹«·ÖĸÊǹؼü£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

ÏÈÔĶÁ£¬ºó½â´ð£º
3
3
-
2
=
3
(
3
+
2
)
(
3
-
2
)(
3
+
2
)
=
3+
6
(
3
)
2
-(
2
)
2
=3+
6

ÏñÉÏÊö½âÌâ¹ý³ÌÖУ¬
3
-
2
Óë
3
+
2
Ïà³Ë£¬»ý²»º¬Óжþ´Î¸ùʽ£¬ÎÒÃǿɽ«ÕâÁ½¸öʽ×Ó³ÆÎª»¥ÎªÓÐÀí»¯Òòʽ£¬ÉÏÊö½âÌâ¹ý³ÌÒ²³ÆÎª·ÖĸÓÐÀí»¯£¬
£¨1£©
3
µÄÓÐÀí»¯ÒòʽÊÇ
 
£»
5
+2
µÄÓÐÀí»¯ÒòʽÊÇ
 
£®
£¨2£©½«ÏÂÁÐʽ×Ó½øÐзÖĸÓÐÀí»¯£º¢Ù
2
5
=
 
£»¢Ú
3
3+
6
=
 
£®
£¨3£©¼ÆËã
1
1+
2
+
1
2
+
3
+¡­+
1
98
+
99
+
1
99
+
100
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ÏÈÔĶÁ£¬ºó½â´ð£º
3
3
-
2
=
3
(
3
+
2
)
(
3
-
2
)(
3
+
2
)
=
3+
6
(
3
)
2
-(
2
)
2
=3+
6
£®ÏñÉÏÊö½âÌâ¹ý³ÌÖУ¬
3
-
2
Óë
3
+
2
Ïà³Ë»ý²»º¬Óжþ´Î¸ùʽ£¬ÎÒÃǿɽ«ÕâÁ½¸öʽ×Ó³ÆÎª»¥ÎªÓÐÀí»¯Òòʽ£¬ÉÏÊö½âÌâ¹ý³ÌÒ²³ÆÎª·ÖĸÓÐÀí»¯£®
£¨1£©
3
µÄÓÐÀí»¯ÒòʽÊÇ
 
£¬
5
+2
µÄÓÐÀí»¯ÒòʽÊÇ
 
£®
£¨2£©½«ÏÂÁÐʽ×Ó½øÐзÖĸÓÐÀí»¯£º
1
2
3
+
11
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

ÏÈÔĶÁ£¬ºó½â´ð£º
3
3
-
2
=
3
(
3
+
2
)
(
3
-
2
)(
3
+
2
)
=
3+
6
(
3
)
2
-(
2
)
2
=3+
6

ÏñÉÏÊö½âÌâ¹ý³ÌÖУ¬
3
-
2
Óë
3
+
2
Ïà³Ë£¬»ý²»º¬Óжþ´Î¸ùʽ£¬ÎÒÃǿɽ«ÕâÁ½¸öʽ×Ó³ÆÎª»¥ÎªÓÐÀí»¯Òòʽ£¬ÉÏÊö½âÌâ¹ý³ÌÒ²³ÆÎª·ÖĸÓÐÀí»¯£¬
£¨1£©
3
µÄÓÐÀí»¯ÒòʽÊÇ
 
£»
5
+2
µÄÓÐÀí»¯ÒòʽÊÇ
 
£®
£¨2£©½«ÏÂÁÐʽ×Ó½øÐзÖĸÓÐÀí»¯£º
£¨1£©
2
5
=
 
£»£¨2£©
3
3+
6
=
 
£®
£¨3£©ÒÑÖªa=
1
2+
3
£¬b=2-
3
£¬±È½ÏaÓëbµÄ´óС¹ØÏµ£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º³õÖÐÊýѧ À´Ô´£º ÌâÐÍ£º

ÏÈÔĶÁ£¬ºó½â´ð£º½â·½³Ì×é
x+y=9¢Ù
5x+3y=33¢Ú

½â£ºÓÉ¢ÙʽµÃy=9-x ¢Û
°Ñ¢Ûʽ´úÈë¢Úʽ£¬µÃ
5x+3£¨9-x£©=33
ÕûÀí£¬µÃx=3 ¢Ü
°Ñ¢Üʽ´úÈë¢Ûʽ£¬µÃy=6x=3
¡ày=6
ÇëÓÃÒÔÉÏ·½·¨½â·½³Ì×飺
6(x+1)-5y=17
2x+3y=12
£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸