Word¸ñʽ
µ¥Ôª²âÊÔ¾í£¨¶þ£©²Î¿¼´ð°¸
Ò»¡¢Ñ¡ÔñÌâ ÌâºÅ 1 2 3 4 5 6 7 8 ´ð°¸ C B B C A D A C ¶þ¡¢Ìî¿ÕÌâ
11. ?44 12. 23 13. x??1114 14. -3 15. a+b=c 16. 2 Èý¡¢½â´ðÌâ
17¼ÆË㣺£¨±¾Ìâ9·Ö£©
(1)½âÔʽ?1?4?1?4
(2)½âÔʽ?4x6y2?(?2xy)?2x2??4x5y3 (3)½âÔʽ??2n?2n2?1
18.(1)½âÔʽ?4a2?4ab?b2?(a?1)2?b2?(a?1)2?4a2?4ab?2b2
µ±a?12,b??2ʱ,Ôʽ?1?4?8?13£¨2£©ÓÉx?1?3µÃx?3?1
»¯¼òÔʽ£½x2?2x?1?4x?4?4
£½x2?2x?1 £½(3?1)2?2(3?1)?1
£½3?23?1?23?2?1 £½3
ÍêÃÀÕûÀí
9 10 B C Word¸ñʽ
£¨3£©Ôʽ£½a2?6a, µ±a?
2?1ʱ,Ôʽ£½42?3£®
1119½âSÒõÓ°?6ab??6ab?a?2b?2ab
22
BFCEDA
20½âÔʽ?x4?3x3?nx2?mx3?3mx2?mnx?8x2?24x?8n?x4?(m?3)x3?(n?3m?8)x2?(mn?24)x?8n?m?3?0?m?3²»º¬x2ºÍx3Ïî,?????n?3m?8?0?n?1721½âÔʽ?Ôʽ?1(a?b)2?(b?c)?(a?c)2,µ±a?2005,b?2006,c?2007ʱ2
??1?1?1?4??32
22½âÔʽ?(x2?2xy?y2?x2?y2)?(?2y)?y?x?y?y?x?´úÊýʽµÄÖµÓëyÎÞ¹Ø
23.½âSÂÌ»¯?(2a?b)(3a?b)?(a?b)2?5a2?3abµ±a?3,b?2ʱ,Ôʽ?63
24½âÈç¹ûx?aʱ,Ó¦½»Ë®·ÑmxÔª;Èç¹ûx?aʱ,am?2m(x?a)?am?2mx?2ma ?2mx?ma ÍêÃÀÕûÀí
Word¸ñʽ
±±Ê¦´ó°æÆßÄê¼¶Êýѧϲá
µÚÒ»Õ ÕûʽµÄ³Ë³ý µ¥Ôª²âÊÔ¾í£¨Èý£©
°à¼¶ ÐÕÃû ѧºÅ µÃ·Ö
Ò»¡¢Ñ¡Ôñ£¨Ã¿Ìâ2·Ö£¬¹²24·Ö£© 1£®ÏÂÁмÆËãÕýÈ·µÄÊÇ£¨ £©£®
A£®2x¡¤3x=6x B£®2x+3x=5x C£®£¨£3x£©¡¤£¨£3x£©=9x D£®
2
2
2
5
2
3
3
2
3
5
5n2m1mn
x¡¤x=x 4523
3
2
2£®Ò»¸ö¶àÏîʽ¼ÓÉÏ3y£2y£5µÃµ½¶àÏîʽ5y£4y£6£¬ÔòÔÀ´µÄ¶àÏîʽΪ£¨ £©£® A£®5y+3y+2y£1 B£®5y£3y£2y£6 C£®5y+3y£2y£1 D£®5y£3y£2y£1 3£®ÏÂÁÐÔËËãÕýÈ·µÄÊÇ£¨ £©£®
A£®a¡¤a=a B£®£¨a£©=a C£®a¡Âa=a D£®a£a=a 4£®ÏÂÁÐÔËËãÖÐÕýÈ·µÄÊÇ£¨ £©£® A£®
2
3
5
2
3
5
6
2
3
6
2
4
3
2
3
2
3
2
11123522
a+a=a B£®3a+2a=5a C£®3xy+4yx=7 D£®£mn+mn=0 235122
xyÊǵ¥Ïîʽ B£®xyûÓÐϵÊý 32
2
5£®ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨ £©£® A£®£
C£®x£1Êǵ¥Ïîʽ D£®0²»Êǵ¥Ïîʽ 6£®Èô£¨x£2y£©=£¨x+2y£©+m£¬ÔòmµÈÓÚ£¨ £©£® A£®4xy B£®£4xy C£®8xy D£®£8xy 7£®£¨a£b+c£©£¨£a+b£c£©µÈÓÚ£¨ £©£®
A£®££¨a£b+c£© B£®c££¨a£b£© C£®£¨a£b£©£c D£®c£a+b
2
2
2
2
2
2
2
ÍêÃÀÕûÀí
Word¸ñʽ
8£®¼ÆË㣨3xy£©¡¤£¨£
62
2
44
xy£©µÄ½á¹ûÊÇ£¨ £©£® 36
62
8
A£®xy B£®£4xy C£®£4xy D£®xy 9£®µÈʽ£¨x+4£©=1³ÉÁ¢µÄÌõ¼þÊÇ£¨ £©£®
A£®xΪÓÐÀíÊý B£®x¡Ù0 C£®x¡Ù4 D£®x¡Ù£4 10£®ÏÂÁжàÏîʽ³Ë·¨ËãʽÖУ¬¿ÉÒÔÓÃÆ½·½²î¹«Ê½¼ÆËãµÄÊÇ£¨ £©£® A£®£¨m£n£©£¨n£m£© B£®£¨a+b£©£¨£a£b£© C£®£¨£a£b£©£¨a£b£© D£®£¨a+b£©£¨a+b£© 11£®ÏÂÁеÈʽºã³ÉÁ¢µÄÊÇ£¨ £©£®
A£®£¨m+n£©=m+n B£®£¨2a£b£©=4a£2ab+b C£®£¨4x+1£©=16x+8x+1 D£®£¨x£3£©=x£9
12£®ÈôA=£¨2+1£©£¨2+1£©£¨2+1£©£¨2+1£©£¬ÔòA£2003µÄĩλÊý×ÖÊÇ£¨ £©£® A£®0 B£®2 C£®4 D£®6 ¶þ¡¢Ìî¿Õ£¨Ã¿Ìâ2·Ö£¬¹²28·Ö£©
13£®£xyµÄϵÊýÊÇ______£¬´ÎÊýÊÇ_______£®
14£®?Ò»¼þ¼Ð¿Ë±ê¼ÛΪa?Ôª£¬?ÏÖ°´±ê¼ÛµÄ7?ÕÛ³öÊÛ£¬Ôòʵ¼ÊÊÛ¼ÛÓôúÊýʽ±íʾΪ
______£®
15£®x_______=x£»£¨m+n£©£¨______£©=n£m£»£¨a£©¡¤£¨a£©=______£®
16£®ÔÂÇò¾àÀëµØÇòԼΪ3.84¡Á10ǧÃ×£¬Ò»¼Ü·É»úËÙ¶ÈΪ8¡Á10ǧÃ×/ʱ£¬?Èô×ø·É»ú·É
ÐÐÕâôԶµÄ¾àÀëÐè_________£®
17£®a+b+________=£¨a+b£© a+b+_______=£¨a£b£© £¨a£b£©+______=£¨a+b£©
18£®Èôx£3x+aÊÇÍêȫƽ·½Ê½£¬Ôòa=_______£® 19£®¶àÏîʽ5x£7x£3ÊÇ____´Î_______Ïîʽ£® 20£®ÓÿÆÑ§¼ÇÊý·¨±íʾ£0.000000059=________£® 21£®Èô£3xyÓë0.4xy
ÍêÃÀÕûÀí
m5
32n+1
2
2
2
2
2
2
2
2
2
2
5
2
n+1
2
2
2
3
3
2
2
2
4
8
2
2
2
2
2
2
2
2
2
2
0
ÊÇͬÀàÏÔòm+n=______£®
Word¸ñʽ
22£®Èç¹û£¨2a+2b+1£©£¨2a+2b£1£©=63£¬ÄÇôa+bµÄÖµÊÇ________£® 23£®Èôx+kx+ 24£®£¨£ 25£®2
2005
2
1122
=£¨x££©£¬Ôòk=_______£»Èôx£kx+1ÊÇÍêȫƽ·½Ê½£¬Ôòk=______£® 4216£22£©=______£»£¨x££©=_______£® 15¡Á£¨0.125£©=________£®
668
26£®ÓÐÈý¸öÁ¬ÐøµÄ×ÔÈ»Êý£¬ÖмäÒ»¸öÊÇx£¬ÔòËüÃǵĻýÊÇ_______£® Èý¡¢¼ÆË㣨ÿÌâ3·Ö£¬¹²24·Ö£©
27£®£¨2xy£3xy£©££¨6xy£3xy£© 28£®£¨£
29£®£¨45a£
31£®£¨x£2£©£¨x+2£©££¨x+1£©£¨x£3£© 32£®£¨1£3y£©£¨1+3y£©£¨1+9y£©
33£®£¨ab+1£©££¨ab£1£©
2
2
2
32
2
2
2
6223432
axy£©¡Â£¨£axy£©¡¤8ay
52121221ab+3a£©¡Â£¨£a£© 30£®£¨xy£6xy£©¡¤£¨xy£© 6332
ÍêÃÀÕûÀí