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Let’s check out your problem:
1
1
1
.
8
2
x
−
9
=
8
x
8^{2 x-9}=8^{x}
8
2
x
−
9
=
8
x
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Math Problems
Precalculus
Factor sums and differences of cubes
Full solution
Q.
1
1
1
.
8
2
x
−
9
=
8
x
8^{2 x-9}=8^{x}
8
2
x
−
9
=
8
x
Set Exponents Equal:
Since the bases are the same, we can set the exponents equal to each other:
2
x
−
9
=
x
2x - 9 = x
2
x
−
9
=
x
.
Subtract and Isolate x:
Subtract
x
x
x
from both sides to isolate
x
x
x
:
2
x
−
x
=
9
2x - x = 9
2
x
−
x
=
9
.
Simplify Equation:
Simplify the equation:
x
=
9
x = 9
x
=
9
.
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