## Intermediate Algebra for College Students (7th Edition)

$a_1=-5$;$a_2=5$;$a_3=-5$;$a_4=5$; $a_5=-5$
Initial term, $a_1=-5$ and common ratio $r=-1$. Now, we need first five terms of a geometric sequence such as: $a_1=-5$;$a_2=-5(-1)=5$;$a_3=5(-1)=-5$;$a_4=-5(-1)=5$; $a_5=5(-1)=-5$ Hence, five terms are: $a_1=-5$;$a_2=5$;$a_3=-5$;$a_4=5$; $a_5=-5$