Question

Page 1
if one of the zero of the quadratic
polynomial x² + 3x + K is 2
then the value of K is
د k​

Answer 1

The required answer is mentioned in the photo.

Answer 2

Answer:

so use the discriminant formula to find this answer

that is, ax²+bx+c

then b²-4ac=0

then, use 2 in the place of x

so u get (2)²+3(2)+k=0

4+6+k=0

8+k=0

so u get, k=-8