Question

(2x-y+z)²

quien me ayuda x favor

Answer 1

(2x-y+z)²=4x²-4xy+4xz+y²-2yz+z²

Answer 2

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