Question 118981
{{{y^2 / ( y + 3)  - 9 / ( y + 3) }}} Start with the given expression



{{{(y^2-9) /( y + 3) }}}  Combine the fractions



{{{( y + 3)( y - 3) /( y + 3)}}} Factor {{{y^2-9}}}




{{{cross( y + 3)( y - 3) /cross( y + 3)}}} Cancel like terms




{{{y - 3}}} Simplify



So {{{y^2 / ( y + 3)  - 9 / ( y + 3)=y-3 }}}