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Let $A = [\begin{array}{ll} 3 2 \\ 1 1 \end{array}]$ satisfies $A^{2} + a A + b I = O$ , then a, b are respectively equal to

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Correct option is C

A2=3 21 13 21 1=11 84 3Now O=A2+aA+bI=11+3a+b8+2a4+a3+a+b⇒ 3a+b=−11,4+a=0,a+b=−3⇒ a=−4,b=1.

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Let A=3 21 1 satisfies A2+aA+bI=O, then a, b are respectively equal to

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Let $A = [\begin{array}{ll} 3 2 \\ 1 1 \end{array}]$ satisfies $A^{2} + a A + b I = O$ , then a, b are respectively equal to