Math Problem Statement

Solve the exponential equation by expressing each side as a power of the same base: 4^x = 32

Solution

The equation provided is:

4x=324^x = 32

We need to solve for xx by expressing both sides as powers of the same base.

  1. Rewrite 4 and 32 as powers of 2:
    • 4=224 = 2^2
    • 32=2532 = 2^5

So, we rewrite the equation as:

(22)x=25(2^2)^x = 2^5

  1. Simplify the left-hand side using the power of a power property (am)n=amn(a^m)^n = a^{mn}:

22x=252^{2x} = 2^5

  1. Now, since the bases are the same (both are base 2), we can equate the exponents:

2x=52x = 5

  1. Solve for xx:

x=52x = \frac{5}{2}

Thus, the solution set is x=52x = \frac{5}{2}.


Would you like more details or have any further questions?

Here are five related questions you might explore:

  1. How would you solve 3x=813^x = 81?
  2. Can you solve 5x=1255^x = 125 using the same approach?
  3. What is the general method for solving exponential equations?
  4. How do you solve equations involving logarithms?
  5. How can you check your solution for exponential equations?

Tip: When solving exponential equations, always look for ways to express both sides as powers of the same base!

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Math Problem Analysis

Mathematical Concepts

Exponential Equations
Powers of Numbers
Equating Exponents

Formulas

(a^m)^n = a^{mn}
If a^m = a^n, then m = n

Theorems

Exponentiation

Suitable Grade Level

Grades 9-12