Answer
$-2,4,-6,8,-10$
Work Step by Step
$a_{n}=2n(-1)^{n}$
Substitute $n=1,2,3,4,5$ in the above formula:
$a_{1}=2(1)(-1)^{1}=-2$
$a_{2}=2(2)(-1)^{2}=4$
$a_{3}=2(3)(-1)^{3}=-6$
$a_{4}=2(4)(-1)^{4}=8$
$a_{5}=2(5)(-1)^{5}=-10$
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