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If A=[(a,b),(c,d)] is such that |A|=0 an...

If `A=[(a,b),(c,d)]` is such that |A|=0 and `A^(2)-(a+d)A+kI=0`,then k is equal to

A

b+c

B

a+d

C

ad-bc

D

zero

Text Solution

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The correct Answer is:
C
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