[tex]5 \times {10}^{4} \times 2 \times {10}^{ - 6} \\ = 5 \times 2 \times {10}^{4} \times {10}^{ - 6} \\ = {10}^{1} \times {10}^{4} \times {10}^{ - 6} \\ \\ \\ using \: fromula \\ {a}^{x} \times {a}^{y} \times {a}^{z} = {a}^{x + y + z} \\ \\ {10}^{1} \times {10}^{4} \times {10}^{ - 6} \: = {10}^{1 + 4 - 6} = {10}^{ - 1} = 1 \times {10}^{ - 1} [/tex]
