Tlg bantuin pls sama caranya juga ya

[tex]x1 + x2 = 5 \\ x1 \times x2 = \frac{2m - 16}{m} \\ {x1}^{2} + {x2}^{2} = 53 \\ {(x1 + x2)}^{2} - 2x1x2 = 53 \\ {5}^{2} - 2 \times \frac{2m - 16}{m} = 53 \\ \frac{4m - 32}{m} = 25 - 53 \\ 4m - 32 = - 28m \\ 32m = 32 \\ m = 1[/tex]
[tex] {m}^{2} + 2m - 8 = {1}^{2} + 2.1 - 8 = - 5[/tex]