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Mathematics
Problem
The quadratic polynomial
q
(
x
)
=
x
2
+
k
x
+
m
q(x)=x^{2}+kx+m
q
(
x
)
=
x
2
+
k
x
+
m
has a repeated zero at
x
=
4
x=4
x
=
4
. Which one of the following ordered pairs
(
k
,
m
)
(k,\,m)
(
k
,
m
)
satisfies this condition? a)
(
8
,
16
)
(8,\,16)
(
8
,
16
)
b)
(
−
4
,
0
)
(-4,\,0)
(
−
4
,
0
)
c)
(
−
8
,
16
)
(-8,\,16)
(
−
8
,
16
)
d)
(
−
8
,
0
)
(-8,\,0)
(
−
8
,
0
)
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