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Mathematics
Mathematics
Problem
For what value of
k
k
k
does the quadratic equation
k
x
2
+
6
x
+
9
=
0
kx^{2}+6x+9=0
k
x
2
+
6
x
+
9
=
0
have equal roots? a)
k
=
−
1
k=-1
k
=
−
1
b)
k
=
0
k=0
k
=
0
c)
k
=
1
k=1
k
=
1
d)
k
=
2
k=2
k
=
2
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