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Mathematics
Problem
Let
p
(
x
)
=
2
x
2
+
k
x
−
5
p(x)=2x^{2}+kx-5
p
(
x
)
=
2
x
2
+
k
x
−
5
. If
x
=
−
1
x=-1
x
=
−
1
is a zero of
p
(
x
)
p(x)
p
(
x
)
, find the value of
k
k
k
. a)
3
3
3
b)
−
7
-7
−
7
c)
−
3
-3
−
3
d)
−
1
-1
−
1
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