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Select the expressions that are polynomials. There may be more than one correct answer.
9x
-13
+13x
11
-7x
15
+x
8
8x
26
-4x
20
-15x
15
+`15/x^23`
2x
24
+3x
3
-x
12
-6x
21
9x
5
-12x
4.9
-12x
18
+4x
4
3x
+2x
22
-5x
`9/4`
+12x
14
Box 1:
Select all correct answers
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x
x
√
n
√
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|
(
)
π
∞
DNE
x
√
(
)
π
∞
DNE
(
)
(
]
[
)
[
]
—∞
∞
∪
DNE
<
>
≤
≥
or
All Real Numbers
DNE
log
log
n
ln
n
√
|
|
e
sin
cos
tan
arcsin
arccos
arctan
〈
〉
∞
DNE
-∞
∞
∪
DNE
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