Pregunta
Use logarithms to solve.
Enter the exact answer (i.e. keep your answer in exponential or logarithmic form, you do not need to calculate its numeric value).
Enclose arguments of functions in parentheses and include a multiplication sign between terms. For example,
.
Hints:
- Remember by the rule of exponents, that
so that you can try to factor this as (
something
something else
where the “something” and “something else” can be positive or negative numbers.
- Alternately, you could let
and this equation would be
and you can solve first for
and then for
.
Ask by Moreno Ellis. in the United States
Jan 25,2025
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Como
The Deep Dive
To solve the equation
, we can make the substitution
, transforming our equation into
. This is a quadratic equation that can be factored as
. Therefore, we have the solutions
and
. Since
cannot be negative, we only consider
. Thus,
.
Applying the natural logarithm, we find
.
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