Question

3x-2x в квадрате <=0

Answer 1

$3x-2x^2 leq 0\2x(1,5-x) leq 0$

          -                                   +                                      -
______________  ________________  ___________
                               0                                     1,5

$xin (-infty;0]cup[1,5;+infty)$