" 96."x^(2)-y^(2)-9z^(2)+6yz" is factorized as "

The range of x^(2)+4y^(2)+9z^(2) - 6yz-3xz-2xy is

The expression x ^(2) - y ^(2) + x + y - z ^(2) + 2 yz - z has one factors, which is

If x,y, and z are real and different and u=x^(2)+4y^(2)+9z^(2)-6yz-3zx-2xy, then u is always a.non-negative b.zero c.non-positive d.none of these

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

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

The range of x^(2)+4y^(2)+9z^(2)-6yz-3xz-2xy is 1. phi2R3*[0,oo)4.(-oo,0)

If x,y, z are real numbers satisfying the equation 25(9x^(2) + y^(2)) + 9z^(2)- 15 (5xy + yz + 3zx)= 0 then x,y, z are in