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Exponents & Radicals
hard
0:00.0
Given
f
(
x
)
=
x
+
2
f(x) = \sqrt{x+2}
f
(
x
)
=
x
+
2
, evaluate
f
(
f
(
f
(
7
)
)
)
f(f(f(7)))
f
(
f
(
f
(
7
)))
.
A
2
2
2
B
3
3
3
C
4
4
4
D
5
5
5
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