Какие из приведенных ниже слов являются этимологически родственными, ответ аргументируйте.
Напёрсток - перст - наперсник -перо.

Найти наибольшее целое решение параметра |5-6x|+8>7x

Переведите данный отрывок с английского на русский. Объясните, почему эти строки так знамениты в американской литературе.

Anyway, I keep picturing all these little kids playing some game in this big field of rye and all. Thousands of little kids, and nobody's around - nobody big, I mean - except me. And I'm standing on the edge of some crazy cliff. What I have to do, I have to catch everybody if they start to go over the cliff - I mean if they're running and they don't look where they're going I have to come out from somewhere and catch them. That's all I do all day. I'd just be the catcher in the rye and all. I know it's crazy, but that's the only thing I'd really like to be.

(а-3)в квадрате - 2(а-3)(а+3)+(а+3)в квадрате