Question

fra anu zeros of the polynomial 2x^2+5x+1
then the value of 1/a+1/b is​

Answer 1

Answer:

-5

Step-by-step explanation:

see the above image..

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Answer 2

Answer:

-5

Step-by-step explanation:

Given,

$= > {2x}^{2} + 5x + 1$

Here,

$\alpha + \beta = \dfrac{ - b}{a} = \dfrac{ - 5}{2} \\ \alpha \beta = \dfrac{c}{a} = \dfrac{1}{2}$

$\therefore \: \dfrac{1}{ \alpha } + \dfrac{1}{ \beta } = \dfrac{ \alpha + \beta }{ \alpha \beta }$

Substitute the value,

$= \dfrac{ \frac{ - 5}{2} }{ \frac{1}{2} }$

$= \dfrac{ - 5}{2} \div \dfrac{1}{2}$

$= - 5$