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Mathematics
Problem
Find the minimum value of the function
f
(
x
)
=
x
2
+
4
x
+
7
f(x)=x^{2}+4x+7
f
(
x
)
=
x
2
+
4
x
+
7
for all real
x
x
x
. a)
7
7
7
b)
−
2
-2
−
2
c)
3
3
3
d)
−
9
-9
−
9
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