[tex] {2}^{2 {}^{3} } = {2}^{8} = 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 = 4 \times 4 \times 4 \times 4 = 16 \times 16 = {16}^{2} = 256[/tex]
