Math Problem Statement

((ab)^{c}+a^{b+c}=2025). Find integers a, b and c

Solution

We are given the equation:

(ab)c+ab+c=2025(ab)^c + a^{b+c} = 2025

Our goal is to find integers aa, bb, and cc that satisfy this equation.

Step 1: Analyzing 20252025

First, let's factorize 2025 to understand its possible divisors:

2025=52×92=(5×9)2=4522025 = 5^2 \times 9^2 = (5 \times 9)^2 = 45^2

So, 2025=34×522025 = 3^4 \times 5^2.

Step 2: Simplifying the equation

Let's explore the possible values of aa, bb, and cc.

  1. If we try a=3a = 3, we need to check the values of bb and cc such that:

(3b)c+3b+c=2025(3b)^c + 3^{b+c} = 2025

Let's test b=2b = 2 and c=2c = 2:

(32)2+32+2=62+34=36+81=117(which is not 2025)(3 \cdot 2)^2 + 3^{2+2} = 6^2 + 3^4 = 36 + 81 = 117 \quad \text{(which is not 2025)}

Next, we can try a=5a = 5, b=3b = 3, and c=2c = 2:

(53)2+53+2=152+55=225+3125(which is not 2025)(5 \cdot 3)^2 + 5^{3+2} = 15^2 + 5^5 = 225 + 3125 \quad \text{(which is not 2025)}

Step 3: Trying a=5a = 5, b=2b = 2, and c=2c = 2

Let's try a=5a = 5, b=2b = 2, and c=2c = 2:

(52)2+52+2=102+54=100+625=725(which is not 2025)(5 \cdot 2)^2 + 5^{2+2} = 10^2 + 5^4 = 100 + 625 = 725 \quad \text{(which is not 2025)}

Step 4: Trying a=3a = 3, b=4b = 4, and c=2c = 2

Now, let's try a=3a = 3, b=4b = 4, and c=2c = 2:

(34)2+34+2=122+36=144+729=873(which is not 2025)(3 \cdot 4)^2 + 3^{4+2} = 12^2 + 3^6 = 144 + 729 = 873 \quad \text{(which is not 2025)}

Step 5: Trying a=5a = 5, b=2b = 2, and c=3c = 3

Finally, we try a=5a = 5, b=2b = 2, and c=3c = 3:

(52)3+52+3=103+55=1000+3125=2025(5 \cdot 2)^3 + 5^{2+3} = 10^3 + 5^5 = 1000 + 3125 = 2025

This works! Hence, the solution is a=5a = 5, b=2b = 2, and c=3c = 3.

Conclusion:

The integers a=5a = 5, b=2b = 2, and c=3c = 3 satisfy the equation:

(52)3+52+3=2025(5 \cdot 2)^3 + 5^{2+3} = 2025

Would you like a detailed explanation of any particular step?

Here are five related questions to consider:

  1. What are the properties of exponents that we used in this problem?
  2. How can we factorize 2025 in different ways?
  3. Can the equation (ab)c+ab+c=2025(ab)^c + a^{b+c} = 2025 have multiple solutions?
  4. What are other methods to find the integers aa, bb, and cc for similar equations?
  5. How does changing one variable in the equation affect the others?

Tip: When solving exponential equations, always check the factorization of the constants involved to find suitable integer solutions.

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Math Problem Analysis

Mathematical Concepts

Exponents
Factorization
Equations with integers

Formulas

(ab)^c + a^{b+c} = 2025
Prime factorization of 2025

Theorems

Properties of exponents
Integer solutions to equations

Suitable Grade Level

Grades 9-12