КТО ШАРИТ ПО АЛГЕБРЕ :)РЕШИТЕЕ ПОЖАЛУЙСТАА

$1) {x}^{2} - 5x - ( {x}^{2} - 6x + 9) < 0 \\ {x}^{2} - 5x - {x}^{2} + 6x - 9 < 0 \\ x - 9 < 0 \\ x < 9$

{y}^{2} - 13y - 5 \\ {y}^{2} - 34y + 289 - {y}^{2} + 13y + 5 \\ - 21y + 294 > 0 \\ - 21y > - 294 \\ " alt=" {y}^{2} - 34y + 289 > {y}^{2} - 13y - 5 \\ {y}^{2} - 34y + 289 - {y}^{2} + 13y + 5 \\ - 21y + 294 > 0 \\ - 21y > - 294 \\ " align="absmiddle" class="latex-formula">
$y < 14$

0 \\ 2y + 16 > 0 \\ 2y > - 16 \\ y = > - 8" alt="3) {y}^{2} + 8y + 16 - 6y - {y}^{2} > 0 \\ 2y + 16 > 0 \\ 2y > - 16 \\ y = > - 8" align="absmiddle" class="latex-formula">

9 - 6z + {z}^{2} \\ {z}^{2} - {z}^{2} - 10z + 6z - 9 > 0 \\ - 4z - 9 > 0 \\ - 4z > 9 \\ z < - " alt="4) {z}^{2} - 10z > 9 - 6z + {z}^{2} \\ {z}^{2} - {z}^{2} - 10z + 6z - 9 > 0 \\ - 4z - 9 > 0 \\ - 4z > 9 \\ z < - " align="absmiddle" class="latex-formula">
$z < - \frac{9}{4} \\ z < - 2.25$