Question

помогите с дз в) и г) с решением

Answer 1

$..... = frac{ {2}^{5} times {7}^{5} times {2}^{ - 7} }{ {7}^{ - 2} times {4}^{ - 2} times {7}^{8} } = frac{ {2}^{5} times {7}^{5} times {7}^{2} times {4}^{2} }{ {2}^{7} times {7}^{8} } = frac{ {2}^{5} times {7}^{7} times ({2}^{2}) ^{2} }{ {2}^{7} times {7}^{8} } = frac{ {2}^{9} times {7}^{7} }{ {2}^{7} times {7}^{8} } = frac{ {2}^{2} }{7 } = frac{4}{7}$
.
.
$.... = frac{ {30}^{6} }{ {10}^{2} times {15}^{4} } = frac{ {2}^{6} times {15}^{6} }{ {2}^{2} times {5}^{2} times {15}^{4} } = frac{ {2}^{4} times {15}^{2} }{ {5}^{2} } = frac{ {2}^{4} times {3}^{2} times {5}^{2} }{ {5}^{2} } = {2}^{4} times {3}^{2} = 16 times 9 = 144$

Answer 2

спасибо большое за помощь

Answer 3

пожалуйста