Переносим в совокупность:
5; x<-3 \\ x^2-2x-15+2x-15 \leq 0 \\ x^2 \leq 30 \\ x \leq б\sqrt{30} \\ x \in [-\sqrt{30};\sqrt{30}] \\ -3<x<5 \\ -x^2+2x+15 \leq -2x+15 \\ -x^2+4x \leq 0 \\ x(4-x) \leq 0 \\ x =0; x = 4; \\ x \in (-\infty;0] \cup [4;+infty) \\ x \in [4;\sqrt{30}] \cup [-\sqrt{30};0] \\ " alt=" (x-5)(x+3) \leq -2x+15 \\ x>5; x<-3 \\ x^2-2x-15+2x-15 \leq 0 \\ x^2 \leq 30 \\ x \leq б\sqrt{30} \\ x \in [-\sqrt{30};\sqrt{30}] \\ -3<x<5 \\ -x^2+2x+15 \leq -2x+15 \\ -x^2+4x \leq 0 \\ x(4-x) \leq 0 \\ x =0; x = 4; \\ x \in (-\infty;0] \cup [4;+infty) \\ x \in [4;\sqrt{30}] \cup [-\sqrt{30};0] \\ " align="absmiddle" class="latex-formula">