Question

find the values of k for which the roots of x²+2kx+9=0 are real and equal
hurry up please​

Answer 1

Answer:

b^2-4ac/2a

x^2+2kx+9=0

a=1, b=2k, c=9

2k^2-4×1×9/2×1

4k^2-36/2