volume_mute

Nested Grouping Symbols – Self Check 6

publish date: 2026/05/07 22:17:47.182886 UTC

volume_mute

Evaluate: \(81 - 4[-2 + (5 - 9)^2]\)

Correct Answer

\(25\)

Explanation

  1. Innermost: \(5 - 9 = -4\)
  2. Exponent: \((-4)^2 = 16\)
  3. Add inside brackets: \(-2 + 16 = 14\)
  4. Multiply: \(4(14) = 56\)
  5. Subtract: \(81 - 56 = 25\)

Reference

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