Question 88009
When you have a product of factors equal to zero, then one of the factors must be zero.  That is,

(2y-9)(y+4)(y-5)=0 
2y-9 = 0   or  y+4= 0 or y-5=0
2y=9
{{{y=9/2}}} or {{{y=-4}}} or {{{y=5}}}


R^2  Retired from SCC