Question

. If median of first five natural numbers is one of the zero of polynomial 5x² + 7x - K. then find K.​

Answer 1

Answer:

Zeros of the polynomial are the roots of this quadratc equation 5x^2−7x+k=0

Given that the roots re reciprocal of each other. Hence product of roots will be 1

From the given equation we can see that product of the roots =5k

⇒5k=1

⇒k=5

Answer 2

Answer:

3

Step-by-step explanation:

First five natural numbers = 1, 2, 3, 4, 5.

Therefore,

Mean =

5

1+2+3+4+5

=

5

15

=3