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Mathematics
Problem
The quadratic equation
x
2
+
2
(
k
−
1
)
x
+
(
k
2
−
1
)
=
0
x^2 + 2(k-1)x + (k^2-1)=0
x
2
+
2
(
k
−
1
)
x
+
(
k
2
−
1
)
=
0
has two equal real roots. Find the value of
k
k
k
. a)
2
2
2
b)
1
1
1
c)
3
3
3
d)
0
0
0
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