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=0\\
t^2-10t+9=0\\
t_{1,2}=\frac{10+-\sqrt{100-4*9*1}}{2}\\
t_1=1\,\,\,\,\,\,t_2=9\\
x^{\frac14}=1\,\,\,\,\,\,\x^{\frac14}=9\\
x_1=1\,\,\,\,\,\,\, x_2=9^4\\
x_1=1\,\,\,\,\,\,\,x_2=6561" alt="x^{\frac12}-10^{\frac14}+9=0\\
(x^{\frac14})^2-10^{\frac14}+9=0\\
t=x^{\frac14}>=0\\
t^2-10t+9=0\\
t_{1,2}=\frac{10+-\sqrt{100-4*9*1}}{2}\\
t_1=1\,\,\,\,\,\,t_2=9\\
x^{\frac14}=1\,\,\,\,\,\,\x^{\frac14}=9\\
x_1=1\,\,\,\,\,\,\, x_2=9^4\\
x_1=1\,\,\,\,\,\,\,x_2=6561" align="absmiddle" class="latex-formula">