Question 71121
10y^2+9y+2 needs to be factored thus:
(5y+2)(2y+1)
If you can't figure out the factors of 10 & 2 that add up to 9 then maybe you should use the quadratic equation. Thus: 
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
Where ay^2+by+c=0 is the standard form of the quadratic equation.