или
0,\\
t^3-t^2-2t=0, \\
t(t^2-t-2)=0, \\
t_1=0, \\
t^2-t-2=0, \\ t_2=-1, t_3=2, \\
2^x=2, \\ x=1." alt="8^x-4^x=2^{x+1}, \\
2^{3x}-4^{2x}-2\cdot2^x=0, \\
2^x=t, t>0,\\
t^3-t^2-2t=0, \\
t(t^2-t-2)=0, \\
t_1=0, \\
t^2-t-2=0, \\ t_2=-1, t_3=2, \\
2^x=2, \\ x=1." align="absmiddle" class="latex-formula">