Q. 134.3( 3 Votes )

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Answer :

LHS =

=

Taking 3 common from Cand C3, we get,

=


Solving the determinant we get,

= 9 [ – 1(yz – 0) + x(y + 3zy + z)]


= 9(yz + xy + 3xyz + xz)


9(3xyz + xy + yz + xz) = RHS


LHS = RHS


Hence Proved.

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