mình làm vài câu cho bạn tham khảo,các câu còn lại thì bạn làm tương tự thôi

23.\(\sqrt{14-2\sqrt{33}}=\sqrt{\left(\sqrt{11}\right)^2-2.\sqrt{11}.\sqrt{3}+\left(\sqrt{3}\right)^2}\)

\(=\sqrt{\left(\sqrt{11}-\sqrt{3}\right)^2}=\left|\sqrt{11}-\sqrt{3}\right|=\sqrt{11}-\sqrt{3}\)

28. \(\sqrt{25-4\sqrt{6}}=\sqrt{\left(2\sqrt{6}\right)^2-2.2\sqrt{6}.1+1^2}=\sqrt{\left(2\sqrt{6}-1\right)^2}\)

\(=\left|2\sqrt{6}-1\right|=2\sqrt{6}-1\)

29.\(\sqrt{14-8\sqrt{3}}=\sqrt{14-2\sqrt{48}}=\sqrt{\left(\sqrt{8}\right)^2-2\sqrt{6}.\sqrt{8}+\left(\sqrt{6}\right)^2}\)

\(=\sqrt{\left(\sqrt{8}-\sqrt{6}\right)^2}=\left|\sqrt{8}-\sqrt{6}\right|=\sqrt{8}-\sqrt{6}\)

nhìn rối mắt quá bạn ơi

90 : 10 = 9

59 x 59 =3481

70 - 58 =  12

96 x199 = 19104

199 x 199 = 39601

987 x 57 =56259

=9

=3481

=12

=19104

=39601

=56259

đây đâu phải bài lớp 2 bn

=55 nhé

có

làm j z bạn

57 : do - go

58 lives

59 does - get

60 is - is

61 have'

62 is - are

63 lives - has

64 doesn''t have

65 do - start

57. What time _________do____your children (go)_____go_______ to school?

58. He (live)________lives________in HCM City.

59. What time______does_____your brother usually (get)_____get______up?

60. My house (be)_____is____in the city and it (be)___is______small.

làm giúp mình với

61. Every morning , we (have)______have____breakfast at 7.00 am.

62. This (be)______is__a book and there (be)___are______pens.

63. Mr. Quang (live)_____lives_______in the countryside. He (have)_____has_____a big garden.

64. John (not have)_____doesn't have________Literature lesson on Friday.

65. What time _____do____you (start)____start_______your class?

lop may ban

lên  mạng mà tìm bạn

0 nha bn

là 0 nha bn

~~ tk mk đi ~~

Ai tk mk mk tk lại ~~ ^^

Kb vs mk nha m.n ~~ n_n