Solve each quadratic inequality. -x^{2}-5 x+6>0 -x^{2}-12 x-11 \leq 0 x^{2}-1<0 x^{2}-2 x-3 \geq 0 x^{2}+4 x-5>0 x^{2}-5 y-6<0 -x^{2}+3 x+10 \leq 0 x^{2}+8 x-9 \geq 0