Question

यदि alpha, beta द्विघात बहुपद f(x) x²+3x+5 के मूल हों, तो 1/alpha + 1/beta का मान ज्ञात करें​

Answer 1

Answer:

$\alpha + \beta = \frac{ - b}{a} \\ \alpha + \beta = \frac{ - 3}{1} = - 3 \\ \alpha \beta = \frac{c}{a} \\ \alpha \beta = \frac{5}{1} = 5 \\ find \: \\ \frac{1}{ \alpha } + \frac{1}{ \beta } \\ = \frac{ \beta + \alpha }{ \alpha \beta } \\ = \frac{ - 3}{5}$