• Choice K
    $$\require{cancel} $$ $$\frac{x^{2}+2x}{x+2}=2$$ $$\Rightarrow x^{2}+2x=2(x+2)$$ $$\Rightarrow x\cancel{(x+2)}=2\cancel{(x+2)}$$ $$\Rightarrow x=2$$

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