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Mathematics
Mathematics
Problem
If the domain of the function
f
(
x
)
=
log
7
(
1
−
log
4
(
x
2
−
9
x
+
18
)
)
f(x) = \log_7(1 - \log_4(x^2 - 9x + 18))
f
(
x
)
=
lo
g
7
(
1
−
lo
g
4
(
x
2
−
9
x
+
18
))
is
(
α
,
β
)
∪
(
γ
,
δ
)
(\alpha, \beta) \cup (\gamma, \delta)
(
α
,
β
)
∪
(
γ
,
δ
)
, then
α
+
β
+
γ
+
δ
\alpha + \beta + \gamma + \delta
α
+
β
+
γ
+
δ
is equal to
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