Question 356243
Hi
.
Solve

{{{y^3 - 9y^2 + 20y = 0}}}
.

{{{ y(y^2 - 9y + 20) = 0}}}
.
y = 0
.
{{{y^2 - 9y + 20 = 0}}}
.
(y-4)(y-5) = 0
y = 4
y = 5