Cho bt M = (1/ √x-1+ √x/x-1).x- √x/2 √x+1 vs x 0 ≥ ; x ≠ 1 1. rút gọn M 2. tìm x để M =1/3

(x-2)^2 . (y-3) = -4 tìm x,y biết x,y thuộc z

Nêu ý nghĩa của đại hội đại biểu toàn quốc lần thứ 3 của Đảng có ý nghĩa như thế nào. Ý nghĩa nào là quan trọng nhất.vì sao?

28) I suddenly remembered that I (forget) .......................... my keys. 29) While Diana (watch) ............... her favourite TV programme, there (be) .............. a power cut. 30) Who (drive) .......................... the car at the time of the accident? 31) By the time Sheila (get) .................. back, Chris (go) .......................... home. 32) David (eat) ..................... Japanese food before, so he (know) ........................... what to order. 33) I (do) .......................... some shopping yesterday, when I (see) .......................... your friend. 34) What .......... you (do)...................... when I (come) ........................... to your office yesterday? 35) Laura (miss) .......................... the party because no one (tell) ............................... her about it.

7/ Lúc 9 giờ 40 phút, một người đi xe đạp có vận tốc 9 km/giờ đi từ A đến B. Biết A cách B 10,8km. Hỏi người ấy đến B lúc mấy giờ ?

Lm giúp mk vs ak mk vote 5 sao

vẽ chibi NL: quạt quạt cho hết sự vắng ở họa ;-;

Tìm x a, `-2/3x=4/15` b, `2``1/3x=-7/26` c, `-7/19x=-13/24`

15) Andrew .................... the test before so he...................... it very easy. A. did/ had found B. had done/ found C. was doing/ found D. did/ was founding 16) You ...................... your new hat when I ...................... you yesterday. A. were wearing/ had met B. wore/ had met C. wore/ was meeting D. were wearing/ met 17) As I .................... the glass, it suddenly ...................... into two pieces. A. cut/ broke B. was cutting/ broke C. cut/ was breaking D. was cutting/ had broken 18) A burglar .................. into the house while we ................... television. A. broke/ were watching B. broke/ watched C. had broken/ watched D. broke/ had watched 19) When I ............................... home, I ........................... a phone call. A. got/ received B. was getting/ was receiving C. got/ had received D. had got/ had received 20) They ................. small cups of coffee after they ..................... dinner. A. had drunk/ finished B. drank/ finished C. were drinking/ finished D. drank/ had finished 21) It was midnight. Outside it ........................... very hard. A. rains B. rained C. had rained D. was raining 22) When he ....................... at the station, his train already..................... A. arrived/ left B. arrived/ had left C. had arrived/ left D. had arrived/ left

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