Question

Help
9×(1/9)^(2)-19×1/9

Answer 1

Решение:
$9times left(frac{1}{9}right)^{2}-19times frac{1}{9} = frac{1}{9} (9times frac{1}{9}-19 )= frac{1}{9}times (-18) =-2$
Ответ: -2