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Let’s check out your problem:
Solve for
n
n
n
.
\newline
−
2
n
=
5
n
+
7
\sqrt{-2n} = \sqrt{5n + 7}
−
2
n
=
5
n
+
7
\newline
n
=
n =
n
=
_____
View step-by-step help
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Math Problems
Precalculus
Solve radical equations
Full solution
Q.
Solve for
n
n
n
.
\newline
−
2
n
=
5
n
+
7
\sqrt{-2n} = \sqrt{5n + 7}
−
2
n
=
5
n
+
7
\newline
n
=
n =
n
=
_____
Square both sides:
Square both sides of the equation to eliminate the square roots.
\newline
(
−
2
n
)
2
=
(
5
n
+
7
)
2
(\sqrt{-2n})^2 = (\sqrt{5n + 7})^2
(
−
2
n
)
2
=
(
5
n
+
7
)
2
\newline
−
2
n
=
5
n
+
7
-2n = 5n + 7
−
2
n
=
5
n
+
7
Isolate variable
n
n
n
:
Isolate the variable
n
n
n
on one side of the equation.
\newline
Add
2
n
2n
2
n
to both sides to get all
n
n
n
terms on one side.
\newline
–
2
n
+
2
n
=
5
n
+
7
+
2
n
–2n + 2n = 5n + 7 + 2n
–2
n
+
2
n
=
5
n
+
7
+
2
n
\newline
0
=
7
n
+
7
0 = 7n + 7
0
=
7
n
+
7
Subtract
7
7
7
:
Subtract
7
7
7
from both sides to isolate the term with
n
n
n
.
\newline
0
−
7
=
7
n
+
7
−
7
0 - 7 = 7n + 7 - 7
0
−
7
=
7
n
+
7
−
7
\newline
–
7
=
7
n
–7 = 7n
–7
=
7
n
Divide by
7
7
7
:
Divide both sides by
7
7
7
to solve for
n
n
n
.
−
7
7
=
7
n
7
\frac{-7}{7} = \frac{7n}{7}
7
−
7
=
7
7
n
n
=
−
1
n = -1
n
=
−
1
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\newline
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x
y = \sqrt{x}
y
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\newline
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\newline
16
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\newline
\newline
Write your answer in simplified form.
\newline
_
_
_
_
\_\_\_\_
____
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Question
Find the real-number root.
\newline
9
16
\sqrt{\frac{9}{16}}
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\newline
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\newline
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_
_
_
_
\_\_\_\_\_
_____
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Find the real-number root using a calculator. Round your answer to the nearest thousandth.
\newline
`\sqrt{957} `
\newline
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Question
Multiply. Write your answer in simplest form.
\newline
273
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\sqrt{273} \times \sqrt{42}
273
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\newline
______
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Simplify.
\newline
63
4
\sqrt{\frac{63}{4}}
4
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\newline
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Simplify. Rationalize the denominator.
\newline
−
4
9
−
2
\frac{-4}{9 - \sqrt{2}}
9
−
2
−
4
\newline
______
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Posted 1 year ago
Question
Solve for
z
z
z
.
\newline
16
=
z
16 = \sqrt{z}
16
=
z
\newline
z
=
z =
z
=
_____
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Question
Solve for
p
p
p
.
\newline
8
=
p
8 = \sqrt{p}
8
=
p
\newline
p
=
p =
p
=
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Posted 1 year ago
Question
Solve for
p
p
p
.
\newline
4
p
=
10
+
3
p
\sqrt{4p} = \sqrt{10 + 3p}
4
p
=
10
+
3
p
\newline
p
=
p =
p
=
_____
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Posted 9 months ago
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