999+185=
giúp mik nha ai nhanh ai đúng mik tick cho
K
Khách
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18 tháng 1 2017
xuy ra x,y bang
x+3=y.(x+2) Ta co:
x,y=x,y thui wa deeeeeeeeeeeeeee.................
18 tháng 1 2017
x = -1 và y = -2 ; x = -3 và y = 0 Cách giải chuyển vế qua rooid tách x+3 thàng x+2+1 rồi sẽ có (x+2)(y+1) = -1 rồi phan tích ước của -1 ra và giải theo từng trường hợp
NB
3
26 tháng 8 2018
School is the temple of learning and get trained for the professional and social life. My school was set up in 1990 on the donated land with the help of donated money. My school atmosphere is very pleasant and school environment is very clean and attractive. My school building is located in the centre of the play ground. On one side of the school there is a big garden having small pond. There are many colourful fish and other water animals in this pond. My school is four storey building having classes for nursery to 12th class students.
My school has one big library, principal office, head office, clerk office, one science laboratory, one computer lab, one common study room, one big lobby, teacher common room, one big sports ground, separate hostel for girls and boys in the school campus. My school has highly qualified and experienced teachers who teach us in very effective and creative manner. My school has around one thousand students who always rank higher in the competitions held outside the school or inside the school. We all go to school in the proper uniform. We have two types of the uniform, one common uniform and other house uniform.
My school timing starts at 7.50 am in the morning and 1.30 pm in the afternoon in the summer season and 8.50 am in the morning and 3.30 pm in the evening in the winter season. We daily go to the library for sometime where we prace reading creative books and newspaper for enhancing our skill and general knowledge.
16 tháng 2 2020
(x + 3)(y - 1) = 4
=> x + 3 và y - 1 thuộc Ư(4)
ta có bảng :
| x+3 | 1 | -1 | 2 | -2 | 4 | -4 |
| y-1 | 4 | -4 | 2 | -2 | 1 | -1 |
| x | -2 | -4 | -1 | -5 | 1 | -7 |
| y | 5 | -3 | 3 | -1 | 2 | 0 |
16 tháng 2 2020
(x + 3) . (y - 1) = 4
Ta có bảng sau:
| x+3 | 1 | 4 | -1 | -4 | 2 | -2 | ||
| y-1 | 4 | 1 | -4 | -1 | 2 | -2 | ||
| x | -2 | 1 | -4 | -7 | -1 | -5 | ||
| y | 5 | 2 | -3 | 0 | 3 | -1 |
Vậy....
(xl mình kẻ thừa 2 cột)
KS
1
27 tháng 2 2022
Diện tích làm nhà là:
\(240\cdot\dfrac{3}{8}=90\left(m^2\right)\)
Diện tích trồng hoa là:
\(240\cdot\dfrac{1}{3}=80\left(m^2\right)\)
Diện tích sân và lối đi là:
\(240-90-80=70\left(m^2\right)\)
bằng 1184
TL
999+185
=1184
HT