If x, y and z are real and distinct, then `x^(2)+9y^(2)+16z^(2)-3xy-12yz-4zx` is always
Channel: Doubtnut
Date: 2020-01-26

If x, y and z are real and distinct, then `x^(2)+9y^(2)+16z^(2)-3xy-12yz-4zx` is always