Quantitative Aptitude Ratio and Proportion Componendo or Dividendo

If \(\frac{a}{b}\; = \;\frac{{25}}{6}\), then the value of \(\frac{{{a^2} - {b^2}}}{{{a^2} + {b^2}}}\) is

1
\(\frac{{589}}{{661}}\)
2
\(\frac{{589}}{{651}}\)
3
\(\frac{{625}}{{36}}\)
4
\(\frac{{661}}{{589}}\)

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