NIMCET 2023 — Mathematics PYQNIMCET | Mathematics | 2023If A and B are square matrices such that B=−A−1BA, then (A+B)2 isChoose the correct answer:A. 0B. A2+B2 (Correct Answer)C. A2+2AB+B2Correct Answer: A2+B2ExplanationB=−A−1BAAB=−(AA−1)BAAB=−BA(A+B)2=A2+B2+AB+BA=A2+B2A0BA2+B2CA2+2AB+B2DA+BShow Answer SExplanationB=−A−1BAAB=−(AA−1)BAAB=−BA(A+B)2=A2+B2+AB+BA=A2+B2
