Nomor 14 a dan b tolong ya. jwb dgn benar beserta caranya!!!

Nomor 14 a dan b tolong ya. jwb dgn benar beserta caranya!!!

${( frac{ {a}^{2}b }{c}) }^{ - 2} = {( frac{ c }{ {a}^{2}b }) }^{ 2} = ( frac{( - 2)}{ ({2}^{2}) 3} )^{2} \ (frac{ - 2}{12} )^{2} = ( - frac{1}{6} )^{2} = frac{1}{36}$
$frac{(2bc^{3} )^{ - 2} }{4a} = frac{(2(3)( - 2)^{3})^{ - 2} }{4(2)} \ = frac{(6( - 8))^{ - 2} }{8} = frac{( - 48)^{ - 2} }{8} = frac{1}{8} times frac{1}{( - 48)^{2} } \ = frac{1}{8} times frac{1}{2304} = frac{1}{18432}$