Предмет: Математика,
автор: RainbowUnicorn1
Решите уравнения с фотографии
Приложения:
![](https://files.topotvet.com/i/09b/09bc6c9357986f03adb8dfcee9f82b85.jpg)
Ответы
Автор ответа:
0
1)![frac{(x-6)(x-6)-(x-12)(x-12)}{(X-12)(x-6)} = frac{ x^{2} -6x-6x+36-( x^{2} -12x-12x+144)}{ x^{2} -6x-12x+72} = frac{(x-6)(x-6)-(x-12)(x-12)}{(X-12)(x-6)} = frac{ x^{2} -6x-6x+36-( x^{2} -12x-12x+144)}{ x^{2} -6x-12x+72} =](https://tex.z-dn.net/?f=+frac%7B%28x-6%29%28x-6%29-%28x-12%29%28x-12%29%7D%7B%28X-12%29%28x-6%29%7D+%3D+frac%7B+x%5E%7B2%7D+-6x-6x%2B36-%28+x%5E%7B2%7D+-12x-12x%2B144%29%7D%7B+x%5E%7B2%7D+-6x-12x%2B72%7D+%3D++)
![= frac{ x^{2} -12x+36- x^{2} +24x-144}{ x^{2} -18x+72} = frac{12x-108}{ x^{2} -18x+72} = frac{ x^{2} -12x+36- x^{2} +24x-144}{ x^{2} -18x+72} = frac{12x-108}{ x^{2} -18x+72}](https://tex.z-dn.net/?f=%3D+frac%7B+x%5E%7B2%7D+-12x%2B36-+x%5E%7B2%7D+%2B24x-144%7D%7B+x%5E%7B2%7D+-18x%2B72%7D+%3D+frac%7B12x-108%7D%7B+x%5E%7B2%7D+-18x%2B72%7D+)
![frac{12x-108}{ x^{2} -18x+72} = frac{5}{6} frac{12x-108}{ x^{2} -18x+72} = frac{5}{6}](https://tex.z-dn.net/?f=frac%7B12x-108%7D%7B+x%5E%7B2%7D+-18x%2B72%7D+%3D+frac%7B5%7D%7B6%7D+)
6(12х-108)=5(х²-18х+72)
72х-648=5х²-90х+360
5х²-162х+1008=0
D=b²-4ac=(-162)²-4·5·1008=26244-20160=6084
![x_{1} = frac{162- sqrt{6084}}{2*5} = frac{162-78}{10} = frac{84}{10} =8,4 x_{1} = frac{162- sqrt{6084}}{2*5} = frac{162-78}{10} = frac{84}{10} =8,4](https://tex.z-dn.net/?f=+x_%7B1%7D+%3D+frac%7B162-+sqrt%7B6084%7D%7D%7B2%2A5%7D+%3D+frac%7B162-78%7D%7B10%7D+%3D+frac%7B84%7D%7B10%7D+%3D8%2C4)
![x_{2} = frac{162+ sqrt{6084}}{2*5} = frac{162+78}{10} = frac{240}{10} =24 x_{2} = frac{162+ sqrt{6084}}{2*5} = frac{162+78}{10} = frac{240}{10} =24](https://tex.z-dn.net/?f=x_%7B2%7D+%3D+frac%7B162%2B+sqrt%7B6084%7D%7D%7B2%2A5%7D+%3D+frac%7B162%2B78%7D%7B10%7D+%3D+frac%7B240%7D%7B10%7D+%3D24)
6(12х-108)=5(х²-18х+72)
72х-648=5х²-90х+360
5х²-162х+1008=0
D=b²-4ac=(-162)²-4·5·1008=26244-20160=6084
Автор ответа:
0
А сколько х равен и наверно решу
Похожие вопросы
Предмет: Геометрия,
автор: aevdokimov450
Предмет: Русский язык,
автор: sarapievtair
Предмет: Литература,
автор: 26092007masha
Предмет: Литература,
автор: Mr20david