Question

решите срочно пожалуйста

Answer 1

$frac{5 times 2^{k + 2} + 10 times 2^{k - 1} }{10^{k + 2} } = frac{ {2}^{k - 2} (5 + 10 times 2)}{ {2}^{k + 2} times {5}^{k+ 2} } = frac{25}{ {2}^{4} times {5}^{k + 2} } = frac{1}{16 times {5}^{k} }$