3^√x -3^(1-√x) =26/3 | *3
3*3^√x - 3* 3^(1-√x) =26
3*3^√x - 3* 3 /(3^√x) =26
3*3^√x - 9 /(3^√x) =26 замена (3^√x)=а ,а>0
3a -9/a=26
3a²-26a-9 =0
D=(676+108)=794
a=(26+28)/6 = 9 (3^√x)=9 (3^√x)=3² √х=2 х=4
a=(26-28)/6 = -1/3 <0 не подходит
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3^√x -3^(1-√x) =26/3 | *3
3*3^√x - 3* 3^(1-√x) =26
3*3^√x - 3* 3 /(3^√x) =26
3*3^√x - 9 /(3^√x) =26 замена (3^√x)=а ,а>0
3a -9/a=26
3a²-26a-9 =0
D=(676+108)=794
a=(26+28)/6 = 9 (3^√x)=9 (3^√x)=3² √х=2 х=4
a=(26-28)/6 = -1/3 <0 не подходит