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If $f(x)=2x-5$ and ${g(x)={x}^{2}+1}$, then $(f+g)(-2)=$ ?

A

$-12$

B

$8$

C

$-4$

D

${-2{x}^{2}-4x+8}$

E

${-4{x}^{3}+8}$

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