СРОЧНО ХЕЛП ДАЮ 35 БАЛОВ (x+1)(x-2)(2x+5)≥0
(x+1)(x-2)*2(x+2.5)≥0 (x+1)(x-2)(x+2.5)≥0 x= -1 x=2 x= -2.5 - + - + -------- -2.5 ------------- -1 ------------- 2 ------------ \\\\\\\\\\\\\\\ \\\\\\\\\\\\\ x= -3 - - - | - x= -2 - - + | + x= 0 + - + | - x= 3 + + + | + x∈[-2.5; -1]U[2; +∞)