# The first half...

**Geometry**Level pending

If \({e_1}\) and \({e_2}\) are roots of the equation \(x^{2}-ax+2=0\) , then the value of **\(a\)** for which \({e_1}\) & \({e_2}\) are the eccentricities of two hyperbolae, can be...

A. \(2 \sqrt{2}\)

B. \(\sqrt{8.5}\)

C. \(\frac{e+ \pi }{2}\)

D. \(\pi\)