[tex](\frac{1}{4} )^{8} =(\frac{1}{2} )^{16}\\ 27^{12} =(3^{4})^{9}\\ 49^{2}=7^{4}\\ 64^{12}=(8^{3})^{8} \\(\frac{1}{8} )^{6} =(\frac{1}{2} )^{18}[/tex]
