Cho các số thực dương x,y,x thỏa mãn \(x^2+y^2+z^2\le3xyz\) . Tìm Max P=\(\frac{x^2}{x^4+yz}+\frac{y^2}{y^4+xz}+\frac{z^2}{z^4+xy}\)
K
Khách
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LH
11 tháng 1 2021
what's your favourite subject
what's your name
what's your address
what's your favourite
what's your favourite food
what's your date of birth
what's your day
....
5 tháng 1 2021
What is the price of this watch?
how much is this watch ?
=>-> How much does this watch cost?
What is the price off the car?
= How much is the car
= How much does this car cost ?
# Chúc bạn học tốt!
6 tháng 1 2021
why do you say " may be i am good at english " you can write english?
5 tháng 1 2021
1/You(look)__are looking____at the board now.
2/ your teacher(sing)__is singing___on the stage right now ?
3/Yesterday,we(play)__played___badminton in the garden.
4/Listen,the dog(bark)__barking__.
5/Where(she)__does she___ live ?
DK
5 tháng 1 2021
1]you are looking .....
2 ] Is your teacher singing.......
3]Yesterday , we played ........
4]listen the dog is barking
5] where does she live
NM
7
YN
4 tháng 1 2021
| STT | Nguyên thể | Qúa khứ | Qúa khứ phân từ | Nghĩa |
| 1 | build | built | built | xây dựng |
| 2 | cast | cast | cast | ném |
| 3 | catch | caught | caught | bắt |
| 4 | choose | chose | chosen | chọn |
| 5 | find | found | fought | chiến đấu |
| 6 | fly | flew | flown | bay |
| 7 | feed | fed | fed | cho ăn , nuôi |
| 8 | fall | fell | fallen | ngã |
| 9 | cut | cut | cut | cắt |
| 10 | deal | dealt | dealt | giao thiệp |
| 11 | cost | cost | cost | có giá là |
| 12 | burst | burst | burst | nổ tung , vỡ òa |
| 13 | bend | bent | bent | bẻ cong |
| 14 | bid | bid | bid | trả giá |
4 tháng 1 2021
Speak-Spoke Grow-grown begin-began
Buy-bought build-built catch-caught
Sing-Sang Sell-Slod cut-cut
See-Saw Do-Did draw-drew
become-became come-came |
|
4 tháng 1 2021
Hello I'm Tony . I'll be in Phu Quoc with myfamily tomorrow . It'll be a lot of fun . In the morning , I think my mum and dad will (1) sunbathe . My sister and I will (2) Build sandcastles on the beach . In the afternoon , we will (3) Swim in the sea . We love swimming . In the evening , we will (4) Have dinner restaurant by the sea . Then we will (5) Go for a walk along the beach . I hope we will have a good time i Phu Quoc .