Question

solve this question. ​

Answer 1

Hello,

Here is the solution... ❤️

$given \: that \\ \: u = 3 {x}^{2} - 2xy + {y}^{2} . \\ \\ v = 2 {x}^{2} + 5xy + 7 {y}^{2} . \\ \\ w = 5 {x}^{2} + 3xy + 8 {y}^{2} . \\ \\ now \\ \\ (3 {x}^{2} - 2xy + {y}^{2} ) + (2 {x}^{2} + 5xy + 7 {y}^{2} ) - (5 {x}^{2} + 3xy + 8 {y}^{2} = 0 \\ \\ 3 {x}^{2} - 2xy + {y}^{2} + 2 {x}^{2} + 5xy + 7 {y}^{2} - 5 {x}^{2} - 3xy - 8 {y}^{2} = 0 \\ \\ 0 = = > 0$

Hence proved.

Answer 2

Here's the answer buddy