Question

5*(-12) = ?
(5-12)(12-5) = ?
(-5+5)(12+12)° =?
Решение пожалуйста.

Answer 1

Ответ:

5 · (-12) = -60.

(5 - 12)(12 - 5) = -7 · 7 = -49.

(-5 + 5) (12 + 12) = 0 · 24 = 0.

Answer 2

Ответ:

$5 \times ( - 12) = - (5 \times 12) = - 60 \\ (5 - 12) \times (12 - 5) = (- 7) \times 7 = - (7 \times 7) = - 49 \\ ( - 5 + 5) \times (12 + 12) = 0 \times 24 = 0$