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Let A= [[1,-1],[2,-1]]and B= [[1,a],[4,b...

Let `A= [[1,-1],[2,-1]]`and `B= [[1,a],[4,b]]`. If `(A+B)^2=A^2+B^2` , then `(a, b)=`

A

(1,-1)

B

(-1,1)

C

(1,1)

D

(-1,-1)

Text Solution

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The correct Answer is:
A
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