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Let’s check out your problem:
Write
−
250
\sqrt{-250}
−
250
in simplest radical form.
\newline
Answer:
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Home
Math Problems
Algebra 2
Introduction to complex numbers
Full solution
Q.
Write
−
250
\sqrt{-250}
−
250
in simplest radical form.
\newline
Answer:
Express as product of square roots:
Express
−
250
\sqrt{-250}
−
250
as the product of square roots and
−
1
\sqrt{-1}
−
1
.
−
250
=
−
1
×
250
=
−
1
×
250
\sqrt{-250} = \sqrt{-1 \times 250} = \sqrt{-1} \times \sqrt{250}
−
250
=
−
1
×
250
=
−
1
×
250
Recognize imaginary unit:
Recognize that
−
1
\sqrt{-1}
−
1
is the imaginary unit
i
i
i
.
−
250
\sqrt{-250}
−
250
=
−
1
\sqrt{-1}
−
1
*
250
\sqrt{250}
250
=
i
i
i
*
250
\sqrt{250}
250
Simplify by factoring perfect squares:
Simplify
250
\sqrt{250}
250
by factoring out perfect squares.
\newline
250
\sqrt{250}
250
\newline
=
25
×
10
\sqrt{25 \times 10}
25
×
10
\newline
=
25
\sqrt{25}
25
×
\times
×
10
\sqrt{10}
10
\newline
=
5
×
10
5 \times \sqrt{10}
5
×
10
Combine with simplified radical:
Combine the imaginary unit
i
i
i
with the simplified radical.
i
⋅
250
i \cdot \sqrt{250}
i
⋅
250
=
i
⋅
5
⋅
10
= i \cdot 5 \cdot \sqrt{10}
=
i
⋅
5
⋅
10
=
5
i
⋅
10
= 5i \cdot \sqrt{10}
=
5
i
⋅
10
More problems from Introduction to complex numbers
Question
Simplify.
\newline
8
i
+
6
i
8i + 6i
8
i
+
6
i
\newline
\newline
Write your answer in the form
a
+
b
i
a + bi
a
+
bi
.
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Question
Find the complex conjugate of the given number.
\newline
4
+
10
i
4 + 10i
4
+
10
i
\newline
\newline
Write your answer in the form
a
+
b
i
a + bi
a
+
bi
.
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Question
Simplify.
\newline
−
4
i
−
9
i
\frac{{-4i}}{{-9i}}
−
9
i
−
4
i
\newline
\newline
Write your simplified answer in the form
a
+
b
i
a + bi
a
+
bi
.
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Question
Combine the like terms to create an equivalent expression.
\newline
7
k
−
k
+
19
=
0
7k-k+19=\boxed{\phantom{0}}
7
k
−
k
+
19
=
0
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Question
Apply the distributive property to factor out the greatest common factor.
\newline
9
+
12
n
=
9+12 n=
9
+
12
n
=
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Question
Solve the equation.
\newline
12
=
n
−
9
n
=
□
\begin{aligned} & 12=n-9 \\ n= & \square \end{aligned}
n
=
12
=
n
−
9
□
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Posted 1 year ago
Question
What is the amplitude of
y
=
−
sin
(
8
x
−
3
)
+
5
y=-\sin (8 x-3)+5
y
=
−
sin
(
8
x
−
3
)
+
5
?
\newline
units
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Posted 1 year ago
Question
What is the period of
\newline
y
=
4
sin
(
−
2
x
+
7
)
−
1
?
y=4 \sin (-2 x+7)-1 \text { ? }
y
=
4
sin
(
−
2
x
+
7
)
−
1
?
\newline
Give an exact value.
\newline
units
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Posted 1 year ago
Question
3
⋅
(
3
+
20
i
)
=
3 \cdot(3+20 i)=
3
⋅
(
3
+
20
i
)
=
\newline
Your answer should be a complex number in the form
a
+
b
i
a+b i
a
+
bi
where
a
a
a
and
b
b
b
are real numbers.
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Posted 1 year ago
Question
(
35
−
23
i
)
+
(
13
+
25
i
)
=
(35-23 i)+(13+25 i)=
(
35
−
23
i
)
+
(
13
+
25
i
)
=
\newline
Express your answer in the form
(
a
+
b
i
)
(a+b i)
(
a
+
bi
)
.
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Posted 1 year ago
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