1
x(x-3)(3x-2)/(2x-3)≤0
x=0 x=3 x=2/3 x=1,5
+ _ + _ +
------------[0]------------[2/3]----------(1,5)------------[3]--------------
x∈[0;2/3] U (1,5;3]
x=0;2;3
ОтветВ
2
(x²-5x+6)/(x²+2x-8)≤1
(x²-5x+6)/(x²+2x-8)-1≤0
(x²-5x+6-x²-2x+8)/(x²+2x-8)≤0
(14-7x)/(x²+2x-8)≤0
-7(x-2)/(x-2)(x+4)≤0
Ответ D
7/(x+4)≥0,x≠2
x+4>0
x>-4
x∈(-4;2) U (2;∞)