Question

Найдите значения выражения 5*(1/5)^2-16*1/5

Answer 1

$5*(\frac{1}{5}) ^{2} -16* \frac{1}{5}=5* \frac{1}{25}- \frac{16}{5}= \frac{5}{25}-\frac{16}{5}= \frac{1}{5}- \frac{16}{5}= \frac{1-16}{5}=- \frac{15}{5}=-3$