[tex] {4}^{75} = ( {2}^{2} )^{75} = ( {2}^{75} )^{2} \\ {23}^{100} = ( {23}^{50} )^{2} \\ {25}^{37} = ( {5}^{2} )^{37} = ( {5}^{37} )^{2} [/tex]
[tex] {2}^{18} \times {3}^{6} = ( {2}^{9} )^{2} \times ( {3}^{3} )^{2} \\ 25 \times {3}^{18} = {5}^{2} \times ( {3}^{9} )^{2} [/tex]