Ответы
Ответ дал:
0
x=3-y;
![3^{3-y}+ 3^{y}=(1/ 3^{y-3})+ 3^{y}=(1/ 3^{y}/ 3^{3} ) + 3^{y}= (3^{3}/ 3^{y})+ 3^{y}=12; 3^{3-y}+ 3^{y}=(1/ 3^{y-3})+ 3^{y}=(1/ 3^{y}/ 3^{3} ) + 3^{y}= (3^{3}/ 3^{y})+ 3^{y}=12;](https://tex.z-dn.net/?f=+3%5E%7B3-y%7D%2B+3%5E%7By%7D%3D%281%2F+3%5E%7By-3%7D%29%2B+3%5E%7By%7D%3D%281%2F+3%5E%7By%7D%2F+3%5E%7B3%7D+%29+%2B+3%5E%7By%7D%3D+%283%5E%7B3%7D%2F+3%5E%7By%7D%29%2B+3%5E%7By%7D%3D12%3B+++++)
![3^{y}= t 3^{y}= t](https://tex.z-dn.net/?f=+3%5E%7By%7D%3D+t+)
27/t + t = 12
![t^{2}-12t+27=0;D=144-108=36;x_{1,2}=(12+-6)/2; x_{1}=9; t^{2}-12t+27=0;D=144-108=36;x_{1,2}=(12+-6)/2; x_{1}=9;](https://tex.z-dn.net/?f=+t%5E%7B2%7D-12t%2B27%3D0%3BD%3D144-108%3D36%3Bx_%7B1%2C2%7D%3D%2812%2B-6%29%2F2%3B+x_%7B1%7D%3D9%3B++++)
;
;
![3^{x}+3=12; 3^{x}=9; x_{1}=2; 3^{x}+3=12; 3^{x}=9; x_{1}=2;](https://tex.z-dn.net/?f=+3%5E%7Bx%7D%2B3%3D12%3B+3%5E%7Bx%7D%3D9%3B++x_%7B1%7D%3D2%3B+++++)
;
![3^{x}+9=12; 3^{x}=3;x_{2}=1; 3^{x}+9=12; 3^{x}=3;x_{2}=1;](https://tex.z-dn.net/?f=+3%5E%7Bx%7D%2B9%3D12%3B+3%5E%7Bx%7D%3D3%3Bx_%7B2%7D%3D1%3B++)
Ответ:
27/t + t = 12
Ответ:
Ответ дал:
0
спасибо большое0
Вас заинтересует
1 год назад
1 год назад
6 лет назад
6 лет назад
9 лет назад
9 лет назад
9 лет назад