Question

please solve this all question
ch 1 polynomial class 10​

Answer 1

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