Beri tahu cara nya dong tolong, terima kasih.

[tex]a. \: ( \frac{( {7}^{3})^{5} \times (7^{2})^{3} }{(7^{5})^{2} } ) = ( \frac{7^{15} \times 7^{6} }{ {7}^{10} } ) = {7}^{21 - 10} = 7^{11} [/tex]