Question

3x^2-y^2+z^2-2xy - Чxz​

Answer 1

Step-by-step explanation:

$3 {x}^{2} - {y}^{2} - {z}^{2} - 2xy - 4xz \\ = 4 {x}^{2} - {x}^{2} - {y}^{2} - {z}^{2} - 2xy - 4xz \\ = - ( {x}^{2} + 2xy + {y}^{2} ) + ( {z}^{2} - 4xz + 4 {x}^{2} ) \\ = - (x + y) ^{2} + (z - 2x) ^{2}$