Question 729978
factor  {{{ a^3 }}} from the eq. like {{{ a^3(a^2+6a+5)=0 }}} so either
 {{{ a^3=0 }}} or {{{ a^2+6a+5=0 }}}  should be check.
for first one {{{ a=0 }}}  and for the second part refer to  the answer for question number

( www.algebra.com/cgi-bin/jump-to-question.mpl?question=729964 ). 


for final check, your answers should be:

0
-5
-1