Найдите значение выражения 21*(1/7)^2 – 10*1/7.

Задание ЕГЭ

Найдите значение выражения 21·(\frac{1}{7})^{2} – 10·\frac{1}{7}.

Решение

Решение:

21·katex is not defined – 10·katex is not defined = 21·katex is not defined – katex is not defined = katex is not defined – katex is not defined = katex is not defined – katex is not defined = katex is not defined

Ответ: –1.