1.А(1,2,3,4,6)
Б(1,4,6)
В(3)
Г(5)
2.на фото график
ответ: [-8 ; 0.5]
3.
0} \atop {3x+12< 0}} \right." alt="\left \{ {{x^{2}-7x-10>0} \atop {3x+12< 0}} \right." align="absmiddle" class="latex-formula">
0} \atop {x< -4}} \right." alt="\left \{ {{x^{2}-7x-10>0} \atop {x< -4}} \right." align="absmiddle" class="latex-formula">
х²-7х-10=0 там должно быть +10 а не -10 тогда
=5 
=2
5} \atop {x>2}} \atop {x< -4}} \right." alt="\left \{ {{x>5} \atop {x>2}} \atop {x< -4}} \right." align="absmiddle" class="latex-formula">
x=(-∞ ; -4)∪(2 ; ∞)
