Question

3)
if the roots of quadratic equation x ²6x+k=0
are equal then the value of k is
1
a)
9
b) - 9
() 8
d) 5​

Answer 1

Step-by-step explanation:

a=1, b=6,c=k

by discriminant formula D=b^2-4ac

(6)^2-4×1×k=0

36-4k=0

4k=36

k=9