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Roots and Nature of Roots
Medium
Repeated Roots and Quadratic Equation Properties
Let
a
,
b
∈
R
be such that the equation
a
x
2
−
2
b
x
+
15
=
0
has a repeated root
α
. If
α
and
β
are the roots of the equation
x
2
−
2
b
x
+
21
=
0
, then
α
2
+
β
2
is equal to :
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SELECT ONE OPTION
A
92
B
37
C
58
D
68
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