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41. ÈôÒ»Ôª¶þ´Î·½³Ìʽ aX2+4X+8=0ÓÐÁ½ÏàÒì½â£¬ÊÔÇóaµÄ·¶Î§

ÈôÒ»Ôª¶þ´Î·½³Ìʽ aX2+4X+8=0ÓÐÁ½ÏàÒì½â£¬ÊÔÇóaµÄ·¶Î§Ïê½â£ºÒ»Ôª¶þ´Î·½³Ìʽ aX2+4X+8=0ÓÐÁ½ÏàÒì½â£¬´ú±íÅбðʽ b2£­4ac>0b2£­4ac>042£­4¡Áa¡Á8>016£­32a>0
/equation/d8fa526bf9e4ab76ecd445a5c5f74ce1.html - 2018-12-13 - ´úÊý·½³Ì
 

42. Ò»Ôª¶þ´Î·½³ÌÏêϸµÄ½â·¨X2£­6X£­391=0

X2£­6X£­391=0X2£­6X=391 (ÏȽ«³£ÊýÏîÒƵ½µÈºÅÓÒ±ß)X2£­6X+(£­3)2=391+(£­3)2(µÈºÅÁ½±ß¶¼¼Ó(£­3)2 )(X£­3)2=400(Åä³ÉÍêȫƽ·½Ê½)
/equation/ec4b5ee186076980a3a130b4f91cee78.html - 2018-12-12 - ´úÊý·½³Ì
 

43. Èô X=5ÊÇÒ»Ôª¶þ´Î·½³Ìʽ (X£­2)(X£­a)=0µÄ½â£¬ÊÔÇóaµÄÖµ

Èô X=5ÊÇÒ»Ôª¶þ´Î·½³Ìʽ (X£­2)(X£­a)=0µÄ½â£¬ÊÔÇóaµÄÖµ¡£ Ïê½â£ºÒ»Ôª¶þ´Î·½³Ìʽ (X£­2)(X£­a)=0£¬ X£­2=0»òX£­a=0ʱ¿ÉʹµÈʽ³ÉÁ¢¡£
/equation/5445db3ddd5d5665ccd092e519ec58c2.html - 2018-12-07 - ´úÊý·½³Ì
 

44. Èô X=2ÊÇÒ»Ôª¶þ´Î·½³ÌʽX2+aX+4=0µÄ½â£¬ÊÔÇóaµÄÖµ

Èô X=2ÊÇÒ»Ôª¶þ´Î·½³ÌʽX2+aX+4=0µÄ½â£¬ÊÔÇóaµÄÖµ¡£Ïê½â£ºX=2ÊÇÒ»Ôª¶þ´Î·½³ÌʽX2+aX+4=0µÄ½â£¬Ò²¾ÍÊǽ« X=2´úÈë·½³Ìʽ£¬¿ÉʹµÈʽ³ÉÁ¢
/equation/970a46967de5a8723c5a2a3c54f502e9.html - 2018-12-06 - ´úÊý·½³Ì
 

45. Ò»Ôª2´Î·½³Ì½âÌâ¹ý³Ì ¸üÏêϸµÄ˵ ÇóÏÂÁÐÒ»Ôª¶þ´Î·½³ÌʽµÄ½â

Ò»Ôª2´Î·½³Ì½âÌâ¹ý³Ì ¸üÏêϸµÄ˵ ÇóÏÂÁÐÒ»Ôª¶þ´Î·½³ÌʽµÄ½â¡£(1) X2£­4X£­6=0 (2)X2£­2X£­9=0Ïê½â£º (ÏȽ«³£ÊýÏîÒƵ½µÈºÅÓÒ±ß)X2£­4X+(£­2)2=6+(£­2)2 (µÈºÅÁ½±ß¶¼¼Ó(£­2)2) (Åä³ÉÍêȫƽ·½Ê½)
/equation/8e298bc1cfd32bb6cb799559bcc73326.html - 2018-12-04 - ´úÊý·½³Ì
 

46. ͬѧ¾­Ñé Ò»Ôª¶þ´Î·½³ÌµÄ½â·¨

ͬѧ¾­Ñé Ò»Ôª¶þ´Î·½³ÌµÄ½â·¨ ÇóÏÂÁÐÒ»Ôª¶þ´Î·½³ÌʽµÄ½â¡£(1) 2X2£­11X=21
(2) (X+6)(X£­5)=£­24Ïê½â£º(1) 2X2£­11X=21
/equation/acf6dc90ed359d1dd1c26528a39d2a0f.html - 2018-12-03 - ´úÊý·½³Ì
 

47. Ò»ÔªÒ»´Î·½³ÌµÄ½â·¨ һ֧ѩ¸âzÔª£¬Ð¡¸ÕÔ­ÓÐ159Ôª£¬ÂòÁË13֧ѩ¸âºó£¬»¹Ê£ÏÂ29Ôª

Ò»ÔªÒ»´Î·½³ÌµÄ½â·¨ һ֧ѩ¸âzÔª£¬Ð¡¸ÕÔ­ÓÐ159Ôª£¬ÂòÁË13֧ѩ¸âºó£¬»¹Ê£ÏÂ29Ôª£¬ÇëÎÊһ֧ѩ¸â¶àÉÙÔª£¿ÂòÑ©¸âµÄ¼ÛÇ®£«Ê£ÏµÄÇ®£½Ð¡¸ÕÔ­ÓеĽð¶î
/equation/df18d71a6f09ba039d79356c45d2bb96.html - 2018-10-15 - ´úÊý·½³Ì
 

48. Ò»ÔªÒ»´Î·½³ÌÁ·Ï° Íõ·¼Ô­ÓÐÁãÓÃÇ®yÔª£¬ÂèÂèÔÙ¸øËû20Ôªºó£¬Ëû¾ÍÓÐ97ÔªÁË£¬

Ò»ÔªÒ»´Î·½³ÌÁ·Ï° Íõ·¼Ô­ÓÐÁãÓÃÇ®yÔª£¬ÂèÂèÔÙ¸øËû20Ôªºó£¬Ëû¾ÍÓÐ97ÔªÁË£¬ÇëÎÊÍõ·¼Ô­±¾ÓжàÉÙÔª£¿Ô­ÓеÄÁãÓÃÇ®£«ÂèÂè¸øµÄ£½Íõ·¼ÏÖÔÚÓеÄÁãÓÃÇ®½ð¶î
/equation/0d818fbb10c5009397b677d0eed0013d.html - 2018-10-15 - ´úÊý·½³Ì
 

49. Éè¦Ö¡¢y ¾ù²»Îª0£¬ÇÒ4 ¦Ö£½9 y£¬Çó£¨2 ¦Ö£«3 y£©£º£¨2 ¦Ö£­3 y£©µÄ±ÈÖµ

Éè¦Ö¡¢y ¾ù²»Îª0£¬ÇÒ4 ¦Ö£½9 y£¬Çó£¨2 ¦Ö£«3 y£©£º£¨2 ¦Ö£­3 y£©µÄ±ÈÖµÏê½â:Ò»ÔªÒ»´Î·½³Ìʽ±ÈÀý
/equation/b28cf38e38c2da5c54e87bad7fd0121f.html - 2018-09-23 - ´úÊý·½³Ì
 

50. Åä·½·¨½âÒ»Ôª¶þ´Î·½³Ì²½Öè

Åä·½·¨½âÒ»Ôª¶þ´Î·½³Ì²½Ö裬ÀýÌ⣬ÎÒÃÇÒѾ­½â¹ý·½³Ì(¦Ö + 3)2 = 2 £¬ÒòΪ·½³ÌÖÐ¦Ö + 3 ÊÇ2 µÄƽ·½¸ù£¬ËùÒÔÔËÓÃÁËÖ±½Ó¿ªÆ½·½·¨À´½â¡£Èç¹ûÎÒÃÇ°Ñ·½³ÌµÄ×ó±ßÕ¹¿ª²¢ÕûÀí£¬¾ÍµÃ¦Ö2 + 6¦Ö + 7 = 0 £¬Òò
/shuxue/7626.html - 2018-09-21 - Êýѧ¼ÆËã¼°¹«Ê½
 

51. Ò»Ôª¶þ´Î·½³ÌµÄ¸ùÓëϵÊýÖ®¹Øϵ

Ò»Ôª¶þ´Î·½³ÌµÄ¸ùÓëϵÊýÖ®¹ØϵÔÚ½âÒ»Ôª¶þ´Î·½³ÌʱÀýÌ⣬ÎÒÃÇ·¢ÏÖËüµÄ¸ùÓëϵÊýÖ®¼äÓÐÒ»¶¨Ö® ¹Øϵ¡£ÀýÈ磬Ôڽⷽ³Ì¦Ö2 - 5¦Ö + 6 = 0 ʱ£¬µÃ¦Ö1 = 2 ¡¢¦Ö2 = 3 ¡£¿ÉÒÔ¿´³ö£¬ ¦Ö1 + ¦Ö2 = 5 ÊÇÒ»´Î
/shuxue/7630.html - 2018-09-16 - Êýѧ¼ÆËã¼°¹«Ê½
 

52. 10¦Ö -[4 + (2¦Ö - 1)]»¯¼òÒ»ÔªÒ»´Î·½³Ì

10¦Ö -[4 + (2¦Ö - 1)]»¯¼òÒ»ÔªÒ»´Î·½³Ì=10¦Ö -[4 + 2¦Ö - 1]=10¦Ö -[2¦Ö + 4 - 1]=10¦Ö -[2¦Ö + 3]=10¦Ö - 2¦Ö -3= 8¦Ö - 3
/equation/3099410ed3999b943db97138b6f9db23.html - 2018-09-13 - ´úÊý·½³Ì
 

53. -3{4[5(2y - 1) + 6]}+ 7y»¯¼òÒ»ÔªÒ»´Î·½³Ì

-3{4[5(2y - 1) + 6]}+ 7y»¯¼òÒ»ÔªÒ»´Î·½³Ì= -3{4[10y - 5 + 6]}+ 7y= -3{4[10y + 1]}+ 7y= -3{40y + 4}+ 7y
/equation/3bcbef646baf96c87e76883b1faaa778.html - 2018-09-11 - ´úÊý·½³Ì
 

54. »¯¼òÒ»ÔªÒ»´Î·½³Ì= (¦Ö - 3) + 2(¦Ö - 4)

»¯¼òÒ»ÔªÒ»´Î·½³Ì= (¦Ö - 3) + 2(¦Ö - 4)= -¦Ö - 3 + 2¦Ö - 8= -¦Ö + 2¦Ö - 3- 8
/equation/5f9616b0c528a675a5143a2b14d8d9fd.html - 2018-09-10 - ´úÊý·½³Ì
 

55. -2(2¦Ö +1) - 2(¦Ö - 3) - 5(-¦Ö +1)»¯¼òÒ»ÔªÒ»´Î·½³Ì

-2(2¦Ö +1) - 2(¦Ö - 3) - 5(-¦Ö +1)»¯¼òÒ»ÔªÒ»´Î·½³Ì= -4¦Ö - 2 - 2¦Ö + 6 +5¦Ö - 5= -4¦Ö - 2¦Ö + 5¦Ö - 2 + 6 - 5
/equation/b563b5c15df536012e1eab722d71b1f4.html - 2018-09-08 - ´úÊý·½³Ì
 

56. (3¦Ö + 4) + 2(¦Ö - 2) + 5(¦Ö + 4)»¯¼òÒ»ÔªÒ»´Î·½³Ì

(3¦Ö + 4) + 2(¦Ö - 2) + 5(¦Ö + 4)»¯¼òÒ»ÔªÒ»´Î·½³Ì= 3¦Ö + 4 + 2¦Ö - 4 + 5¦Ö + 20= 3¦Ö + 5¦Ö + 2¦Ö + 4 - 4 + 20
/equation/4134bcd807b39efe7e1fe95076fea3f9.html - 2018-09-07 - ´úÊý·½³Ì
 

57. Òòʽ·Ö½â·¨½âÒ»Ôª¶þ´Î·½³Ì²½Öè

Òòʽ·Ö½â·¨½âÒ»Ôª¶þ´Î·½³Ì²½ÖèÎÒÃÇÖªµÀ£¬Ò»Ôª¶þ´Î·½³Ì¶¼¿ÉÒÔÓù«Ê½·¨À´½â¡£¶ÔÓÚijЩϵÊý½ÏΪÌØÊâµÄ·½³Ì£¬ÀýÈç¦Ö2 = 4 £¬ÓÃÖ±½Ó¿ª·½·¨¾Í±È½Ï¼ò±ã¡£ÏÖÔÚÎÒÃÇÔÙÀ´Ñ§Ï°Ò»ÖÖ¼ò±ãµÄ·½·¨------Òòʽ·Ö½â
/shuxue/7629.html - 2018-09-06 - Êýѧ¼ÆËã¼°¹«Ê½
 

58. 2(¦Ö - 2) + 7(¦Ö - 3)»¯¼òÒ»ÔªÒ»´Î·½³Ì

2(¦Ö - 2) + 7(¦Ö - 3)»¯¼òÒ»ÔªÒ»´Î·½³Ì= 2¦Ö - 4 + 7¦Ö - 21= (2¦Ö + 7¦Ö) + (-4 - 21)
/equation/9b9a85fd8022a83d6893c7638fb13238.html - 2018-09-06 - ´úÊý·½³Ì
 

59. ¹«Ê½·¨½âÒ»Ôª¶þ´Î·½³Ì²½Öè

¹«Ê½·¨½âÒ»Ôª¶þ´Î·½³Ì²½ÖèÀýÌ⣬ÏÖÔÚÎÒÃÇÓÃÅä·½·¨½âÒ»°ãÐÎʽµÄÒ»Ôª¶þ´Î·½³Ìa¦Ö2 + b¦Ö + c = 0 ( a ¡Ù 0 )¡£ÒòΪa¡Ù0£¬ËùÒԾͿÉÒÔ¸ù¾Ý·½³ÌµÄͬ½âÔ­Àí£¬°ÑÒ»Ôª¶þ´Î·½³Ìa¦Ö2 + b¦Ö + c = 0 µÄÁ½±ß
/shuxue/7627.html - 2018-09-04 - Êýѧ¼ÆËã¼°¹«Ê½
 

60. Ò»ÔªÒ»´Î·½³ÌÁ·Ï° Ò»±­¿§·È±ÈÒ»±­Â̲è¹ó5Ôª£¬È«°à20¸öÈËÂòÁË15 ±­¿§·ÈºÍ5±­ºì²è

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/equation/8be2d93b1dcc3a20c1a7a5acd80ced7e.html - 2018-08-29 - ´úÊý·½³Ì
 
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