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Select the expressions that are polynomials. There may be more than one correct answer.
12x
15
-3x
2
-14x
`9/8`
+2x
5
9x
19
-7x
3.8
-7x
26
-10x
5x
13
+x
14
+15x
15
+`14/x^9`
3x
-7
-9x
8
-4x
23
+13x
4
6x
20
+8x
21
+6x
6
-x
28
Box 1:
Select all correct answers
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X
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Basic
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Intervals
Inequalities
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Trig
x
x
√
n
√
|
|
(
)
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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