Em xn phép sửa đề
Rút gọn: \(\sqrt{6-4\sqrt{2}}-\sqrt{11+6\sqrt{2}}\)
\(=\sqrt{4-2.2\sqrt{2}+2}-\sqrt{9+2.3.\sqrt{2}+2}\)
\(=\sqrt{\left(2-\sqrt{2}\right)^2}-\sqrt{\left(3+\sqrt{2}\right)^2}\)
\(=\left|2-\sqrt{2}\right|-\left|3+\sqrt{2}\right|\). Do 2 > căn 2 và 3 + căn 2 > 0 nên:
\(=2-\sqrt{2}-3-\sqrt{2}=-1-2\sqrt{2}\)
Giúp mik vs ạ tks\(\sqrt{ }\)
\(128\sqrt{e980}\) = ????
__ #mắm cấm trả lời nghe chưa...=.=
cho dạng quá khứ các động từ sau : 1 be ... 2 have ..... 3 take..... 4 play... 5 study..... 6 enjoy..... 7 like ...8 go.... 9 do....10ride.... 11 speak .. 12 relax
bài 1: Tính
a) \(\dfrac{-5}{7}\) . \(\dfrac{2}{11}\) + \(\dfrac{-5}{7}\) . \(\dfrac{9}{11}\) + 1\(\dfrac{5}{7}\)
b) \(\dfrac{-3}{14}\) +\(\dfrac{5}{8}\) -\(\dfrac{1}{2}\)
c) ( \(\dfrac{1}{4}\) +\(\dfrac{-5}{13}\))+( \(\dfrac{2}{11}\) + \(\dfrac{-8}{13}\) + \(\dfrac{3}{4}\) )
d) ( \(\dfrac{21}{31}\) + \(\dfrac{-16}{7}\) )+( \(\dfrac{44}{53}\) +\(\dfrac{10}{31}\) )+\(\dfrac{9}{53}\)
e) \(\dfrac{1}{9}\) - \(\dfrac{5}{6}\) -4
___________
\(\dfrac{7}{12}\) - \(\dfrac{1}{36}\) -10
giúp em
6 Write for or since
1 ....since.................2002
2 ...............................yesterday
3 ................................six days
4..................................a month
5 .................................two weeks
6 ....................................last month
7.......................................two year
8 .......................................a whole day
9.........................................three hours
10.....................................Monday
11 ........................................my biethday
12 ........................................last weekend
1 . Write the past participles of the following verbs
1 eat ....................................
2 sleep................................
3 open......................................
4 iron..........................................
5 clean ......................................
6 take .........................................
7 arrive .........................................
8 put..........................................
9 leave ......................................
10 break ....................................
11 make ..................................
12 run ...................................
1.nevevr be alone
2.hello
3.unity
4.windfall
5.mesmerize
6.uncover
7.highlife
8.energy
9.electro light
10.desmeon
11.colors
12.cetus
13.alan walker
1.Change the following verbs into V-ing forms ( chuyển những động từ sau sang V ing).
1.arrive 7.copy
2.load 8.ride
3.lie 9.watch
4.go 10.sit
5.write 11.have
6.get 12.listen
give the correct from of the verbs in the past tense
1.do 6 cut 11 buy 16 think
2.teach 7 put 12 have 17 see
3 send 8 give 13 take 18 eat
4 spend 9 write 14 go 19 sing
5 begin 10 be 15 make 20 wear
