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If , then…
MATHEMATICS · Single correct · AoPS · Mathematics · Functions · Functions
Problem
If
f
(
x
)
=
x
2
−
4
x
+
7
f(x)=x^{2}-4x+7
f
(
x
)
=
x
2
−
4
x
+
7
, then
f
(
t
+
1
)
f(t+1)
f
(
t
+
1
)
is (a)
t
2
−
4
t
+
4
t^{2}-4t+4
t
2
−
4
t
+
4
(b)
t
2
−
2
t
+
8
t^{2}-2t+8
t
2
−
2
t
+
8
(c)
t
2
−
2
t
+
4
t^{2}-2t+4
t
2
−
2
t
+
4
(d)
t
2
+
2
t
+
4
t^{2}+2t+4
t
2
+
2
t
+
4
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