25x33x60x7
21x65x121x48
tính nhanh hộ với đang cần gấpppppp
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2. You didn't remember turning off the TV last night, did you?
3. The countryside suffers much less pollution than the city.
4. Why don't you go to work by bike?
6. More trees will be planted along this street.
7. Overpopulation causes a lot of social problems in this area, doesn't it?
8. Pollution is the most serious problem, isn't it?
9. Did a group of foreigners visit slums last week?
câu 1, 5, 10 thấy đã làm rồi nên mình không có làm lại nha.
2. You didn't remember turning off the TV last night, did you?
3. The countryside suffers much less pollution than the city.
4. Why don't you go to work by bike?
6. More trees will be planted along this street.
7. Overpopulation causes a lot of social problems in this area, doesn't it?
8. Pollution is the most serious problem, isn't it?
9. Did a group of foreigners visit slums last week?
waste => waste
belief => believe
advertisement => advertise
promise => promise
feeling => feel
advice => advise
description => describe
invention => invent
government => govern
Adj
honesty => honest
variety => various
madness => mad
mystery => mysterious
beauty => beautiful
wealth => wealthy
success => successful
comfort => comfortable
peace => peaceful
\((x - 3).(2y + 1) = 7\)
Ý của bạn là chỉ yc tìm mỗi vế của biến x ạ?
\(\left(x-3\right)\cdot\left(2y+1\right)\in\text{Ư}\left(7\right)=\left\{1;7;-1;-7\right\}\)
`\Rightarrow \text {TH1:} x - 3 = 1`
`\Rightarrow x = 1 + 3`
`\Rightarrow x = 4`
`\text {TH2:} x - 3 = 7`
`\Rightarrow x = 7 + 3`
`\Rightarrow x = 10`
`\text {TH3:} x - 3 = -1`
`\Rightarrow x = -1 + 3`
`\Rightarrow x = 2`
`\text {TH4:} x - 3 = -7`
`\Rightarrow x = -7 + 3`
`\Rightarrow x = -4`
Vậy, `x \in {-4; 4; 2; 10}`
ta có
trường hợp 1:(x-3)=7
x-3=7
x=7+3
x=10
x-3=7
x=7+3
x=10
trường hợp 2:(x-3)=1
x-3=1
x=1+3
x=4
Là 7927920 đó bạn
21 x 65 x 121 x 48 = 7927920