Question

if alpha and beta are the zeros of quadratic polynomial f x is equal to X square + X - 2 find the value of one upon Alpha minus one upon beta​

Answer 1

We have,

$\frac{1}{ \alpha } + \frac{1}{ \beta } = \frac{ \alpha + \beta }{ \alpha \beta }$

And,

$\alpha + \beta = \frac{ - 1}{1} = - 1 \\ \alpha \beta = - 2$

Thus,

$\frac{1}{ \alpha } + \frac{1}{ \beta } = \frac{ - 1}{ - 2} = \frac{1}{2}$

HOPE THIS COULD HELP!!!