Question

решите уравнение y(y+3)(y-3)-2y(y+4)^2=3-y^3-16y2

Answer 1

y (y+3)(y-3)-2y(y+4)^2=3-y^3-16y^2
y (y^2-9)-2y(y^2+8y+16)= 3- y^3 -16y^2
y^3-9y-2y^3-16y^2-32y=3-y^3-16y^2
-y^3-41y=3-y^3
-41y=3
y=-3/41