Question

Pls tell with explanation​

Answer 1

$\alpha +\beta =\frac{-b}{a} \\\alpha \beta =\frac{c}{a}\\\frac{\alpha }{\beta } +\frac{\beta }{\alpha } =\frac{\alpha ^{2} +\beta ^{2}}{\alpha \beta } =\frac{(\alpha +\beta) ^{2} -2\alpha \beta}{\alpha \beta} =\frac{(\frac{-b}{a})^{2} -\frac{2c}{a}}{\frac{c}{a}} \\=\frac{\frac{b^{2}-2ac}{a^{2} } }{\frac{c}{a} } =\frac{b^{2}-2ac}{ac}$

Hence ans is a