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If a, b are two perfect square digits an...

If a, b are two perfect square digits and ab is a two digit perfect square number , such that `(a xx b) + (a+ b) = ab` then the value of `[ba - (b + a)]` is :

A

27

B

`b^2`

C

81

D

either of b and c

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The correct Answer is:
D
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