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Let’s check out your problem:
Solve for
r
r
r
.
\newline
r
+
6
=
−
2
r
\sqrt{r + 6} = \sqrt{-2r}
r
+
6
=
−
2
r
\newline
r
=
r =
r
=
_____
View step-by-step help
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Math Problems
Precalculus
Solve radical equations
Full solution
Q.
Solve for
r
r
r
.
\newline
r
+
6
=
−
2
r
\sqrt{r + 6} = \sqrt{-2r}
r
+
6
=
−
2
r
\newline
r
=
r =
r
=
_____
Square Both Sides:
Square both sides of the equation to eliminate the square roots.
\newline
(
r
+
6
)
2
=
(
−
2
r
)
2
(\sqrt{r + 6})^2 = (\sqrt{-2r})^2
(
r
+
6
)
2
=
(
−
2
r
)
2
\newline
r
+
6
=
−
2
r
r + 6 = -2r
r
+
6
=
−
2
r
Isolate Variable
r
r
r
:
Isolate the variable
r
r
r
on one side of the equation.
\newline
Add
2
r
2r
2
r
to both sides of the equation.
\newline
r
+
2
r
+
6
=
−
2
r
+
2
r
r + 2r + 6 = -2r + 2r
r
+
2
r
+
6
=
−
2
r
+
2
r
\newline
3
r
+
6
=
0
3r + 6 = 0
3
r
+
6
=
0
Subtract to Solve:
Subtract
6
6
6
from both sides of the equation to solve for
r
r
r
.
\newline
3
r
+
6
−
6
=
0
−
6
3r + 6 - 6 = 0 - 6
3
r
+
6
−
6
=
0
−
6
\newline
3
r
=
−
6
3r = -6
3
r
=
−
6
Divide to Find Value:
Divide both sides of the equation by
3
3
3
to find the value of
r
r
r
.
\newline
3
r
3
=
−
6
3
\frac{3r}{3} = \frac{-6}{3}
3
3
r
=
3
−
6
\newline
r
=
−
2
r = -2
r
=
−
2
More problems from Solve radical equations
Question
What is the domain of this function?
\newline
y
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x
y = \sqrt{x}
y
=
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\newline
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\newline
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{
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∣
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}
\newline
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x
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>
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Question
Find the real-number root.
\newline
16
\sqrt{16}
16
\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}}
16
9
\newline
Simplify your answer and write it as a decimal or as a proper or improper fraction.
\newline
_
_
_
_
_
\_\_\_\_\_
_____
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Question
Find the real-number root using a calculator. Round your answer to the nearest thousandth.
\newline
`\sqrt{957} `
\newline
_______
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Posted 1 year ago
Question
Multiply. Write your answer in simplest form.
\newline
273
×
42
\sqrt{273} \times \sqrt{42}
273
×
42
\newline
______
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Posted 1 year ago
Question
Simplify.
\newline
63
4
\sqrt{\frac{63}{4}}
4
63
\newline
______
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Posted 1 year ago
Question
Simplify. Rationalize the denominator.
\newline
−
4
9
−
2
\frac{-4}{9 - \sqrt{2}}
9
−
2
−
4
\newline
______
Get tutor help
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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