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28. λ μμ \( a \), \( p \)μ λνμ¬ ν¬λ¬Όμ \( (y - a)^2 = 4px \)μ μ΄μ μ \( \mathrm{F}_1 \)μ΄λΌ νκ³ , ν¬λ¬Όμ \( y^2 = -4x \)μ μ΄μ μ \( \mathrm{F}_2 \)λΌ νμ. μ λΆ \( \mathrm{F}_1 \mathrm{F}_2 \)κ° λ ν¬λ¬Όμ κ³Ό λ§λλ μ μ κ°κ° \( \mathrm{P} \), \( \mathrm{Q} \)λΌ ν λ, \( \overline{\mathrm{F}_1 \mathrm{F}_2} = 3 \), \( \overline{\mathrm{P}\mathrm{Q}} = 1 \)μ΄λ€. \( a^2 + p^2 \)μ κ°μ? [4μ ] \begin{itemize} \item[1] 6 \item[2] \(\frac{25}{4}\) \item[3] \(\frac{13}{2}\) \item[4] \(\frac{27}{4}\) \item[5] 7 \end{itemize} |