Could you make sure that you include brackets in your expresion(s). It's ambiguous otherwise, and sometimes expressions like this are impossible to answer. I'm having to guess at what I think the (rational) expression is supposed to be.
Thanks.
solve: (6y^2-52y-18)/(3y^2+25y+8)*(3y^2+18y-48)/(y^2-11y+18)
The quadratic expressions in the above rational factorise as,
{(2*(3*y+1))*(y-9) / (y+8)*(3*y+1)} * {(3*(y+8))*(y-2) / (y-2)*(y-9)} which simplifies to
{(2*(y-9) / (y+8)} * {(3*(y+8)) / (y-9)}
looking closely at the above expression, we can see that all bracketed terms cancel, leaving us with
{2} * {3}
The rational expression reduces down to: 6