[tex]5 {}^{2} \times 5 {}^{7} = 5 {}^{2 + 7} = 5 {}^{9} [/tex]
[tex](5 {}^{2} ) {}^{3} = 5 {}^{2 \times 3} = 5 {}^{6} [/tex]
[tex] \frac{5 {}^{2} }{5 {}^{8 } } = 5 {}^{2 - 8} = 5 {}^{ - 6} [/tex]
[tex]5 {}^{3} \times 4 {}^{3} = (5 \times 4) {}^{3} = 20 {}^{3} [/tex]
