Question

pls answer 3rd question​

Answer 1

Let the roots be x and 1 / x.

f ( x ) = 5x² + 13x + k

On comparing with ax² + bx + c, we get

a = 5, b = 13, c = k

Now,

Product of zeroes = c / a = k / 5

Also, product of zeroes = ( x ) ( 1 / x )

•°•

( x ) ( 1 / x ) = k / 5

1 = k / 5

k = 5

Hence, the value of k is 5.