task/29407648 -----------------------
x(2.5-x)(5/3x+3)=0 * * * ОДЗ : x ≠ 0 * * *
x(2.5-x)(5/3x+3)= 0 || x ≠ 0 || ⇔ [ 2.5 - x = 0 ; 5/3x +3 =0 . ⇔ [ x= 2.5 ; 5/3x = - 3 . ⇔ [ x= 2.5 ; -9x =5 .⇔ [ x= 2.5 ; x = - 5/9 .
ответ: x= - 5/9 ; x = 2.5 . * * * { -5/9 ; 2.5} * * *