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[" (29.Verify that "A=[[a,b],[c,d]]" sat...

[" (29.Verify that "A=[[a,b],[c,d]]" satisfies the equation "x^(2)-(a+d)x+(ad-bc)l=0" where "I" is the "],[2times2" unit matrix."]

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Verify that A=[[a,b],[c,d]] satisfies the equation A^2-(a+d)A+(ad-bc) I=0 where I is the 2 x 2 unit matrix.

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