Question

find the value of the above pic​

Answer 1

Answer:

27

Step-by-step explanation:

${(x + y + z)}^{2} = {x}^{2} + {y}^{2} + {z}^{2} + xy + yz + xz \\ = > {( - 5)}^{2} = {x}^{2} + {y}^{2} + {z}^{2} + ( - 2) \\ = > 25 = {x}^{2} + {y}^{2} + {z}^{2} - 2 \\ = > 25 + 2 = {x}^{2} + {y}^{2} + {z}^{2} \\ = > {x}^{2} + {y}^{2} + {z}^{2} = 27$