Из равенства найдите значение a: [(9 − 5)² − (3 − 4)⁴ + (2 − 5)²] · a = −72

  1. −2
  2. −3
  3. −4
  4. −9

📝 Detailed explanation

Выполним действия в скобках: [4² − (−1)⁴ + (−3)²] · a = −72 ⇒ [16 − 1 + 9] · a = −72 ⇒ 24 · a = −72. Отсюда a = −3.
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