Question 642819
The 1st term is


Cn = (-1)^n(n-17)^2


C1 = (-1)^1(1-17)^2


C1 = (-1)^1(-16)^2


C1 = (-1)(256)


C1 = <font color="red">-256</font>


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The 2nd term is


Cn = (-1)^n(n-17)^2


C2 = (-1)^2(2-17)^2


C2 = (-1)^2(-15)^2


C2 = (1)(225)


C2 = <font color="red">225</font>


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The 3rd term is


Cn = (-1)^n(n-17)^2


C3 = (-1)^3(3-17)^2


C3 = (-1)^3(-14)^2


C3 = (-1)(196)


C3 = <font color="red">-196</font>