(x+2)(x+3)(x-4)<0
(х²+3х+2х+6)(х-4)<0
х³+3х²+2х²+6х-4х²-12х-8х-24<0
х³+х²-14х-24<0
(х²-3х)(4х+2)>0
4х³+2х²-12х²-6х²>0
4х³-16х²>0
y = -x^2 +7x -10
(m+2n)^3=m^3+6m^2n+6mn^2+2n^3