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Mathematics
Problem
Let
s
(
x
)
=
x
4
−
4
t
x
+
t
2
s(x)=x^{4}-4tx+t^{2}
s
(
x
)
=
x
4
−
4
t
x
+
t
2
, where
t
t
t
is a real parameter. Evaluate
s
(
2
t
)
s(2t)
s
(
2
t
)
and simplify your answer. a)
16
t
4
+
7
t
2
16t^{4}+7t^{2}
16
t
4
+
7
t
2
b)
8
t
4
−
7
t
2
8t^{4}-7t^{2}
8
t
4
−
7
t
2
c)
16
t
4
−
7
t
2
16t^{4}-7t^{2}
16
t
4
−
7
t
2
d)
16
t
4
−
8
t
2
16t^{4}-8t^{2}
16
t
4
−
8
t
2
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