Question

Sum of the zeroes of the polynomial p(x) = x2 - kx + 9 is 7. Find ti
value of K.​

Answer 1

Step-by-step explanation:

You can find the answer in the attachment!!

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Answer 2

The required value of k is 7.

Given:

Sum of zeroes=7

p(x)= x2-kx+ 9

To find:

The value of k

Solution:

The given polynomial has coefficients of $x^{2}$ and x that will be used to obtain the sum of its zeroes.

The coefficient of $x^{2}$ and x are a and bb, respectively.

So, a=1 and b= -k

We know that the sum of zeroes= -b/a

Using the given value of the sum,

-(-k)/1=7

k/1=7

k=7

Therefore, the required value of k is 7.