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Algebra Examples
Popular Problems
Algebra
Simplify cube root of 81
3
√
81
81
3
Step 1
Rewrite
81
81
as
3
3
⋅
3
3
3
⋅
3
.
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Step 1.1
Factor
27
27
out of
81
81
.
3
√
27
(
3
)
27
(
3
)
3
Step 1.2
Rewrite
27
27
as
3
3
3
3
.
3
√
3
3
⋅
3
3
3
⋅
3
3
3
√
3
3
⋅
3
3
3
⋅
3
3
Step 2
Pull
terms
out from under the radical.
3
3
√
3
3
3
3
Step 3
The result can be shown in
multiple
forms.
Exact Form:
3
3
√
3
3
3
3
Decimal Form:
4.32674871
…
4.32674871
…
3
√
8
1
8
1
3
(
(
)
)
|
|
[
[
]
]
√
√
≥
≥
7
7
8
8
9
9
≤
≤
4
4
5
5
6
6
/
/
^
^
×
×
>
>
∩
∩
∪
∪
1
1
2
2
3
3
-
-
+
+
÷
÷
<
<
π
π
∞
∞
,
,
0
0
.
.
%
%
=
=
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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