Heya..........!!!_____________________________This question can be easily solved by applying the identity :=> ( X + y + z )² = x² + y² + z² + 2 ( xy + yz + ZX ) Given in the question :--» x + y + z = 9 --» xy + yz + zx = 26 => ( 9 )² = x² + y² + z² + 2 ( 26 )=> 81 = x² + y² + z² + 52 => x² + y² + z² = 81 - 52 ♦ 29. is the required ANSWER . ===================================HOPE It Helps You ☺
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