wat is help sheet, didn't help,
instructions unclear, got my calculator stuck in the ceiling fan
remember some simple exponential laws
[tex]( x^{n} )(x^{m})=x^{n+m}[/tex] and
[tex] \frac{x^{n}}{x^{m}} =x^{ n-m }[/tex]
[tex] x^{-m}= \frac{1}{x^{m}} [/tex]
first one
[tex] (2^{-6})(2^{3})=2^{-6+3}=2^{-3}= \frac{1}{2^{3}} = \frac{1}{8} [/tex]
2nd one
[tex] \frac{7^{5}}{7^{3}} =7^{ 5-3 } = 7^{2} = 49 [/tex]
third one
[tex] (3^{-4})(3^{2})=3^{-4+2}=3^{-2}= \frac{1}{3^{2}} = \frac{1}{9} [/tex]
dunno wat to do with 'help sheet'
