Explanation:
r=-24/8=72/-24=-3
By using this equation:
a(n)=a(1)*r^(n-1)
and we have a(1)=8 , r=-3
a(n)=8*(-3)^(n-1)
a(10)=8*(-3)^(10-1)
=8*(-3)^9
=-157464
hope this helps
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