gsfmcbyx6b gsfmcbyx6b 26-07-2024 Mathematics Answered Solve for [tex]\( r \)[/tex].[tex]\[ \frac{f}{r^2} + a = n + k \][/tex]A. [tex]\( \pm \sqrt{\frac{f}{n+k-a}} \)[/tex]B. [tex]\( \pm \sqrt{\frac{f}{nk-a}} \)[/tex]C. [tex]\( \pm \sqrt{\frac{nk-a}{f}} \)[/tex]D. [tex]\( \pm \sqrt{\frac{n+k-a}{f}} \)[/tex]