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Byju's Answer
Standard XII
Mathematics
Strictly Increasing Functions
One of the ro...
Question
One of the roots of equation
2
x
2
+
k
x
−
2
=
0
is
−
2
, find
k
.
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Solution
2
x
2
+
k
x
−
2
=
0
if one root os -2 then
if satisfy the equation
2
(
−
2
)
2
+
k
(
−
2
)
−
2
=
0
8
−
2
−
2
k
=
0
k
=
6
2
=
3
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