Question

if one root of the polynomial f(x)=5x2+13x+k is reciprocal of the other , then the value of k is

1. 0
2. 6
3. 1/6
4. 5​

Answer 1

Answer:

5

Step-by-step explanation:

we know that the product of the root is always c/a(k/5)

The given polynomial is in the form of ax^2 + bx + c

Given, one root is reciprocal of the other

Let one root =y then other is 1/y

product=y*1/y=1

therefore, K/5=1

Hence,k=5

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