If f(x) = 12 - x^2/2 and f(2k) = 4k, what is…

If f(x) = 12 - x^2/2 and f(2k) = 4k, what is one possible value for k?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #19011

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