Question 308999
{{{ ((z^2) / (z+1)) * ((Z^2 +3z +2) / (z^2 +3z)) }}}

{{{z^2+3z+2= (z +1)(z+2) }}}
{{{z^2 +3z=z(z+3)}}}
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{{{ (z^2 / (z+1)) * ((z^2 +3z +2)/(z^2 +3z))= (z^2/(z+1))*(((z+1)(z+2))/(z(z+3))) }}} 
{{{ (z^2 / (z+1)) * ((z^2 +3z +2)/(z^2 +3z))= (z^cross(2)/cross(z+1))*((cross(z+1)(z+2))/(cross(z)(z+3))) }}} 
{{{ (z^2 / (z+1)) * ((z^2 +3z +2)/(z^2 +3z))= (z)*((z+2)/(z+3)) }}} 
Not sure which choice to pick. THe only restriction on z is z not equal to -3.