Помогите, пожалуйста!)
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Ответил Матов
0
Поделим числитель и знаменатель на 
![frac{frac{6}{x}}{1+frac{2}{x}+frac{3}{x^2}}+frac{frac{11}{x}}{1+frac{7}{x}+frac{3}{x^2}}=2\
frac{1}{x}=t \
frac{6t}{1+2t+3t^2}+frac{11t}{1+7t+3t^2}=2\
18t^4+3t^3-24t^2+t+2=0\
(t-1)(3t-1)(6t^2+9t+2)=0\
t=1\
t=frac{1}{3}\
D=81-4*6*2\
t=frac{-sqrt{33}+9}{12}\
t=frac{sqrt{33}-9}{12}](https://tex.z-dn.net/?f=+%0A+++++++frac%7Bfrac%7B6%7D%7Bx%7D%7D%7B1%2Bfrac%7B2%7D%7Bx%7D%2Bfrac%7B3%7D%7Bx%5E2%7D%7D%2Bfrac%7Bfrac%7B11%7D%7Bx%7D%7D%7B1%2Bfrac%7B7%7D%7Bx%7D%2Bfrac%7B3%7D%7Bx%5E2%7D%7D%3D2%5C%0Afrac%7B1%7D%7Bx%7D%3Dt+%5C%0A+frac%7B6t%7D%7B1%2B2t%2B3t%5E2%7D%2Bfrac%7B11t%7D%7B1%2B7t%2B3t%5E2%7D%3D2%5C%0A18t%5E4%2B3t%5E3-24t%5E2%2Bt%2B2%3D0%5C%0A%28t-1%29%283t-1%29%286t%5E2%2B9t%2B2%29%3D0%5C%0At%3D1%5C%0At%3Dfrac%7B1%7D%7B3%7D%5C%0AD%3D81-4%2A6%2A2%5C%0At%3Dfrac%7B-sqrt%7B33%7D%2B9%7D%7B12%7D%5C%0At%3Dfrac%7Bsqrt%7B33%7D-9%7D%7B12%7D "frac{frac{6}{x}}{1+frac{2}{x}+frac{3}{x^2}}+frac{frac{11}{x}}{1+frac{7}{x}+frac{3}{x^2}}=2\
frac{1}{x}=t \
frac{6t}{1+2t+3t^2}+frac{11t}{1+7t+3t^2}=2\
18t^4+3t^3-24t^2+t+2=0\
(t-1)(3t-1)(6t^2+9t+2)=0\
t=1\
t=frac{1}{3}\
D=81-4*6*2\
t=frac{-sqrt{33}+9}{12}\
t=frac{sqrt{33}-9}{12}")
![x=1\
x=3\ -frac{sqrt{33}-9}{4}\ frac{sqrt{33}-9}{4}](https://tex.z-dn.net/?f=x%3D1%5C%0Ax%3D3%5C+%C2%A0-frac%7Bsqrt%7B33%7D-9%7D%7B4%7D%5C%C2%A0frac%7Bsqrt%7B33%7D-9%7D%7B4%7D "x=1\
x=3\ -frac{sqrt{33}-9}{4}\ frac{sqrt{33}-9}{4}")
Ответил kate6777
0
примного благодарна!))
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