Answer
$a_1=-4
\\a_2= 40
\\a_3=-400
\\a_4=4000
\\a_5=-40000$
Work Step by Step
Multiply the common ratio to get the next term to obtain:
$a_1=-4
\\a_2=-4(-10) = 40
\\a_3=40(-10)=-400
\\a_4=-400(-10)=4000
\\a_5=4000(-10) = -40000$
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