Q.

If A and B  are two square matrices such that B=−ABA-1  then (A+B)2=

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a

O

b

A2+B2

c

A2+2AB+B2

d

A+B

answer is B.

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Detailed Solution

B=−ABA-1 BA=−ABA-1A BA=-AB A+B2=A2+B2
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