Câu 1. Tính nhanh a) 12,7 + 12,7 + 12,7 + 12,7 x 8 – 12,7 b) 81,3 x 99 + 82 – 0,7 c) (100 + 42) x 42 + (200 – 58) x 58 d) 17,8 x 99 + 17 + 0,8 e) 103,7 x 101 – 103 – 0,7 g) 124 x 76 + 12 x 248 h) 12,48 x 3,47 – 3,47 x 2,48 i) 128 x 68 + 16 x 256

Chứng minh rằng 1/2 - 1/4 + 1/8 - 1/16 + 1/32 - 1/64 < 1/3

Ex 1: Learn by heart the new words. Addicted (adj): nghiện cái gì đó Communicate (v): giao tiếp Community centre (n): trung tâm văn hoá cộng đồng Craft (n): đồ thủ công Craft kit (n): bộ dụng cụ làm thủ công Hang out (v): đi chơi với bạn bè Hooked (adj): yêu thích cái gì Weird (adj): kì cục Virtual (adj): ảo (chỉ có ở trên mạng) DIY (n): tự làm Ex 2: Find the word which has different sound in the underlined part in each line. 1. A. addicted B. virtual C. kit D. active 2. A. communicate B. produce C. computer D. summer 3. A. pressure B. especial C. prepare D. helpful 4. A. hooked B. book C. school D. foot 5. A. wanted B. booked C. hooked D. stopped Ex 3: Choose the correct option for each gap in the sentences. 1. A. addicted B. especially C. computer D. concentrate 2. A. virtual B. visual C. visit D. visible 3. A. donate B. activate C. active D. monkey 4. A. excited B. exercise C. expect D. experience 5. A. enter B. endanger C. enable D. encourage Ex 4: Choose the best answer A, B, C, or D. 1. Does she fancy …………… a book to the younger children? A. reads B. reading C. to read D. read 2. They enjoy …………… on Sundays. A. garden B. gardening C. gardened D. gardens 3. They love ……………with their friends. A. eat out B. ate out C. having eaten D. to eat out 4. I prefer …………… people. A. text B. texting C. texted D. texts 5. They detest …………… so early in the morning. A. getting up B. get up C. to get up D. gets up 6. My dad doesn’t mind…………… my mom from work every day. A. pick up B. picked up C. picking up D. picks up Ex 5: Put the verbs in brackets into the correct form. 1. Son, do you fancy (play) ………………….. badminton with me some time next week? 2. I love (listen) ………………….. to music with good earphones! 3. My brother likes (cook)………………….., but he detests (wash) ………………….. the dishes. 4. They enjoyed (watch) ………………….. the show very much. 5. She doesn’t like (communicate) ………………….. through emails. In fact, she hates (do) ………………….. it. She prefers (meet) ………………….. people in person. 6. They adore (make) …………………..and (eat) ………………….. good food.

3x^2 - 9x + 6 Tìm nghiệm của đa thức trên

Chứng minh tính đúng đắn của câu tục ngữ " Thất bại là mẹ thành công ". ( Bài văn ).

Tìm giá trị lớn nhất,giá trị nhỏ nhất a)A=x^2+4x+6/x^2+3 b)B=x^2+2x+6/x^2-2x+1 c)C=x^2/x^2-5x+7 d)D=4x+3/x^2+1 f)F=2x+1/x^2+2 g)G=3x^3-2x+3/x^2+1

Cho mik xin 2 pic anime vẽ giấy *Ko bắt buộc* ♡˖꒰ᵕ༚ᵕ⑅꒱

Giải gấp giúp mình nha ..................

1.The house is too expensive for them to buy. -> The house is so 2.It is difficult for me to learn English grammar. -> I have 3.It was raining,so he took his umbrella. ->He 4.My grandfather cannot work very hard because of his age. -> My grandfather is 5.He will be absent from the class discussion tommorrow. -> I wish 6.It would be nice to travel to Dalat by train. -> I wish 7.He typed her lesson plan in 20 minutes. ->It took ->He spent 8.She likes to wear modern clothing at work. ->He's fond 9.It's not easy to do this exercise. ->Doing. 10.My father no longer works for this company. ->My father used 11.I hate staying in a noisy room. ->If only 12.Nga is sick today, so she can't go to school. -> Because 13.I can't do the test because it is difficult. ->It is such 14. The flight from HCMC to Singapore only takes three hours. ->It only takes *Lm giúp mik nhanh nhó* 8h30' mik phải đi học

Giúp mình với a, căn ( 3 + căn 5) . căn ( 3 - căn 5) = 2 b, căn ( 10 - căn 17 ) . căn ( 10 + căn 17 )