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Question

A=⎡⎢⎣12101−13−11⎤⎥⎦ then A2−A=

A
300011054
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B
121311354
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C
311311354
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D
311311354
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Solution

The correct option is C 311311354
A=121011311
A2=121011311121011311=430322645
Now, A2A=430322645121011311
=311311354

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