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Basic Math Examples
Popular Problems
Basic Math
Evaluate square root of -121
√
−
121
-
121
Step 1
Rewrite
−
121
-
121
as
−
1
(
121
)
-
1
(
121
)
.
√
−
1
(
121
)
-
1
(
121
)
Step 2
Rewrite
√
−
1
(
121
)
-
1
(
121
)
as
√
−
1
⋅
√
121
-
1
⋅
121
.
√
−
1
⋅
√
121
-
1
⋅
121
Step 3
Rewrite
√
−
1
-
1
as
i
i
.
i
⋅
√
121
i
⋅
121
Step 4
Rewrite
121
121
as
11
2
11
2
.
i
⋅
√
11
2
i
⋅
11
2
Step 5
Pull
terms
out from under the radical, assuming positive real numbers.
i
⋅
11
i
⋅
11
Step 6
Move
11
11
to the left of
i
i
.
11
i
11
i
2
√
−
1
2
1
-
1
2
1
2
(
(
)
)
|
|
[
[
]
]
√
√
≥
≥
π
π
7
7
8
8
9
9
≤
≤
4
4
5
5
6
6
/
/
^
^
×
×
>
>
!
!
1
1
2
2
3
3
-
-
+
+
÷
÷
<
<
,
,
0
0
.
.
%
%
=
=
⎡
⎢
⎣
x
2
1
2
√
π
∫
x
d
x
⎤
⎥
⎦
[
x
2
1
2
π
∫
x
d
x
]
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