We are asked to solve the equation $3^{x+2} - 6 \cdot 3^x + 5 \cdot 3^{x-2} = 0$ for $x$.

AlgebraExponentsEquationsExponential EquationsNo Solution
2025/4/17

1. Problem Description

We are asked to solve the equation 3x+263x+53x2=03^{x+2} - 6 \cdot 3^x + 5 \cdot 3^{x-2} = 0 for xx.

2. Solution Steps

First, we can rewrite the terms in the equation using the properties of exponents:
3x+2=3x32=93x3^{x+2} = 3^x \cdot 3^2 = 9 \cdot 3^x
3x2=3x32=193x3^{x-2} = 3^x \cdot 3^{-2} = \frac{1}{9} \cdot 3^x
Substituting these back into the equation, we get:
93x63x+5193x=09 \cdot 3^x - 6 \cdot 3^x + 5 \cdot \frac{1}{9} \cdot 3^x = 0
Now, let y=3xy = 3^x. Then the equation becomes:
9y6y+59y=09y - 6y + \frac{5}{9}y = 0
Combining the terms, we have:
3y+59y=03y + \frac{5}{9}y = 0
27y+5y9=0\frac{27y + 5y}{9} = 0
32y9=0\frac{32y}{9} = 0
32y=032y = 0
y=0y = 0
Since y=3xy = 3^x, we have 3x=03^x = 0.
However, 3x3^x is always positive for any real number xx, so 3x3^x can never be equal to 00. Therefore, there is no solution to the equation.

3. Final Answer

There is no solution.

Related problems in "Algebra"

The problem requires us to write a piecewise function that represents the monthly charge for electri...

Piecewise FunctionsLinear EquationsModeling
2025/4/18

The problem asks to find the piecewise function that represents the given graph. The graph consists ...

Piecewise FunctionsLinear EquationsCoordinate GeometrySlopePoint-Slope Form
2025/4/18

We are given a piecewise function: $f(x) = \begin{cases} x-1, & x < n \\ -x+4, & x \ge n \end{cases}...

Piecewise FunctionsRangeFunctionsInequalitiesFunction Analysis
2025/4/18

The problem asks us to find the x-intercept(s) and y-intercept(s) of the piecewise-defined function ...

FunctionsPiecewise FunctionsInterceptsGraphing
2025/4/18

We are given a piecewise-defined function in a graph. We need to express the function in function no...

Piecewise FunctionsLinear EquationsInterceptsFunction Notation
2025/4/18

The problem asks to describe the domain and range of the function represented by the given graph. Th...

FunctionsDomainRangeDiscrete FunctionsCoordinate Geometry
2025/4/18

The problem asks us to determine if the given function, represented by discrete points on a graph, i...

Linear FunctionsDomain and RangeDiscrete MathematicsFunctions
2025/4/18

The problem involves a polynomial $F(x, y, z) = x^3 + y^3 + z^3 - 3xyz$. (a) We need to show that $F...

PolynomialsFactorizationCyclic ExpressionsAlgebraic Manipulation
2025/4/18

We are given an arithmetic sequence $\{a_n\}$ with the sum of the first $n$ terms denoted by $S_n$. ...

Arithmetic SequencesSeriesSummationLinear Equations
2025/4/18

The problem is to find the first term $a_1$ and the common difference $d$ of an arithmetic sequence ...

Arithmetic SequencesSeriesLinear Equations
2025/4/18