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Let’s check out your problem:
Find the positive solution of the equation.
\newline
6
x
8
5
−
28
=
100663268
6 x^{\frac{8}{5}}-28=100663268
6
x
5
8
−
28
=
100663268
\newline
Answer:
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Math Problems
Precalculus
Operations with rational exponents
Full solution
Q.
Find the positive solution of the equation.
\newline
6
x
8
5
−
28
=
100663268
6 x^{\frac{8}{5}}-28=100663268
6
x
5
8
−
28
=
100663268
\newline
Answer:
Add
28
28
28
to isolate variable:
Add
28
28
28
to both sides of the equation to isolate the term with the variable.
\newline
6
x
8
5
−
28
+
28
=
100663268
+
28
6x^{\frac{8}{5}} - 28 + 28 = 100663268 + 28
6
x
5
8
−
28
+
28
=
100663268
+
28
\newline
6
x
8
5
=
100663296
6x^{\frac{8}{5}} = 100663296
6
x
5
8
=
100663296
Divide by
6
6
6
:
Divide both sides of the equation by
6
6
6
to solve for
x
8
5
x^{\frac{8}{5}}
x
5
8
.
\newline
6
x
8
5
6
=
100663296
6
\frac{6x^{\frac{8}{5}}}{6} = \frac{100663296}{6}
6
6
x
5
8
=
6
100663296
\newline
x
8
5
=
16777216
x^{\frac{8}{5}} = 16777216
x
5
8
=
16777216
Recognize power of
2
2
2
:
Recognize that
16777216
16777216
16777216
is a power of
2
2
2
. Specifically,
16777216
=
2
24
16777216 = 2^{24}
16777216
=
2
24
.
Replace with
2
2
2
^
24
24
24
:
Write the equation with
2
24
2^{24}
2
24
in place of
16777216
16777216
16777216
.
\newline
x
8
5
=
2
24
x^{\frac{8}{5}} = 2^{24}
x
5
8
=
2
24
Raise to power of
5
5
5
/
8
8
8
:
Raise both sides of the equation to the power of
5
8
\frac{5}{8}
8
5
to solve for
x
x
x
.
\newline
(
x
8
5
)
5
8
=
(
2
24
)
5
8
\left(x^{\frac{8}{5}}\right)^{\frac{5}{8}} = \left(2^{24}\right)^{\frac{5}{8}}
(
x
5
8
)
8
5
=
(
2
24
)
8
5
\newline
x
=
2
24
⋅
5
8
x = 2^{24 \cdot \frac{5}{8}}
x
=
2
24
⋅
8
5
\newline
x
=
2
15
x = 2^{15}
x
=
2
15
Calculate
2
2
2
^
15
15
15
:
Calculate the value of
2
15
2^{15}
2
15
.
\newline
2
15
=
32768
2^{15} = 32768
2
15
=
32768
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