Question

If alpha beta gamma are the roots of 2x³-5x²+3x-1=0 then 1/Alpha beta+1/beta gamma+1/gamma alpha=?​

Answer 1

Correct option is

C

5

The required expression can be written as

αβγ

α+β+γ

Now, α+β+γ=

2

5

and αβγ=

2

1

.

So the value of the given expression is

2

1

2

5

=

hope this was useful!