Mathematics · Matrices
Four friends Abhay, Bina, Chhaya, and Devesh were asked to simplify the matrix expression 4AB + 3(AB + BA) - 4BA, where A and B are distinct matrices of order 2 × 2 such that AB ≠ BA. Their answers are: Abhay: 6 AB Bina: 7 AB - BA Chhaya: 8 AB Devesh: 7 BA - AB Who answered it correctly?
- 1Devesh
- 2Chhaya
- 3Bina✓
- 4Abhay
Correct answer
Bina
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