Question

Помогите пожалуйста)))Ради бога.

Answer 1

$(frac{5}{2})^{2} :(-frac{25}{4})*(frac{5}{2})^{o}*frac{2}{5}=-frac{5^{2} }{2^{2} }*frac{2^{2} }{5^{2} }*1*frac{2}{5}=-1*1*frac{2}{5}=-frac{2}{5}=-0,4$