[tex] {2}^{3x} + {4}^{x} \times {2}^{x + 2} + {8}^{x + 1} = 832[/tex]
[tex] {2}^{3x} + {2}^{2x} \times {2}^{x + 2} + {2}^{3x + 3} = 832[/tex]
[tex] {2}^{3x} + {2}^{2x + x + 2} + {2}^{3x + 3} = 832[/tex]
[tex] {2}^{3x} (1 + 4 + 8) = 832[/tex]
[tex] {2}^{3x} \times 13 = 832[/tex]
[tex] {2}^{3x} = 832 \div 13 = 64[/tex]
[tex] {2}^{3x} = {2}^{6} [/tex]
3x = 6 => x = 2
