Mathematics · Matrices
Let α and β be real numbers. Consider a 3 × 3 matrix A such that A2 = 3A + αI. If A4 = 21A + βI, then which of the following is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1β = -8✓
- 2β = 8
- 3α = 4
- 4α = 1
Correct answer
β = -8
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