Question

If sum of the zeroes of the quadratic polynomial x square+ kx+2=_3 then find the value of k

Answer 1

Given:-

Sum of zeros of a Quadratic polynomial is 3

The Quadratic polynomial is x² + kx + 2

To find:-

Value of K

SOLUTION:-

As we know that ,

$sum \: of \: zeros \: = \: \dfrac{ - b}{a}$

Here ,

• b = coefficient of x term
• a = coefficient of x² term

x² + kx + 2

• a = 1
• b = k
• c = 2

$sum \: of \: zeros \: = \dfrac{ - b}{a}$

$3 = \dfrac{ - k}{1}$

$3(1) = - k$

$- k = 3$

$k = - 3$

So, the value of k is -3