Math Problem Statement

Express 129,600 as a product of its prime factors. Using your answer, explain why 129,600 is a perfect square. Given that p and q are prime numbers, find the values of p and q such that 129,600p/q is a perfect cube.

Solution

This image includes multiple math questions regarding prime factorization, perfect squares, and perfect cubes. Let's break down each part:

Part (a): Express 129,600 as a product of its prime factors.

  • To solve this, we'll perform prime factorization on 129,600.

Part (b): Using the answer from part (a), explain why 129,600 is a perfect square.

  • After the prime factorization, we'll analyze if each prime factor has an even exponent, which would confirm it is a perfect square.

Part (c): Given that pp and qq are prime numbers, find the values of pp and qq such that 129600pq\frac{129600p}{q} is a perfect cube.

  • We'll need to adjust the prime factorization of 129,600 by multiplying it with pp and dividing by qq in such a way that the resulting expression is a perfect cube.

Let me first handle part (a) by finding the prime factorization of 129,600. sympy as sp

Finding the prime factorization of 129600

number = 129600 prime_factors = sp.factorint(number) prime_factorsThe prime factorization of 129,600 is:

129,600=26×34×52129,600 = 2^6 \times 3^4 \times 5^2

For part (b): To check if 129,600 is a perfect square, we observe the exponents of the prime factors. For a number to be a perfect square, each prime factor's exponent must be even.

In this case:

  • The exponent of 22 is 6 (even),
  • The exponent of 33 is 4 (even),
  • The exponent of 55 is 2 (even).

Since all exponents are even, 129,600 is indeed a perfect square.

Now, let's move to part (c), where we need to find prime numbers pp and qq such that 129600pq\frac{129600p}{q} is a perfect cube. I'll calculate this next.To make 129600pq\frac{129600p}{q} a perfect cube, the exponents of all prime factors must be multiples of 3.

Currently, the prime factorization of 129,600 is 26×34×522^6 \times 3^4 \times 5^2, with the following exponents:

  • For 22, we have 66 (which is a multiple of 3, so no change needed).
  • For 33, we have 44 (we need to add 2 to make it a multiple of 3).
  • For 55, we have 22 (we need to add 1 to make it a multiple of 3).

Therefore, to make 129600pq\frac{129600p}{q} a perfect cube:

  • We can multiply by p=32p = 3^2 (to increase the exponent of 3 to 6),
  • We can divide by q=51q = 5^1 (to increase the exponent of 5 to 3).

Thus, p=9p = 9 and q=5q = 5.

Would you like more explanation or further details on any part of this process? Here are some related questions:

  1. How do we determine the smallest prime factors of a number?
  2. What is the definition of a perfect square and how can we identify one?
  3. How can we generalize the process of making a number a perfect cube?
  4. What happens if the exponents of prime factors are not adjusted to multiples of 3 in a perfect cube?
  5. How does the prime factorization of a number affect its properties (like being a square or a cube)?

Tip: Always check if the exponents of prime factors are in the required form (even for squares, multiples of 3 for cubes) to quickly determine if a number fits a specific condition!

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Math Problem Analysis

Mathematical Concepts

Prime Factorization
Perfect Squares
Perfect Cubes

Formulas

Prime Factorization: Expressing a number as a product of prime numbers.
Condition for Perfect Square: Exponents of all prime factors must be even.
Condition for Perfect Cube: Exponents of all prime factors must be multiples of 3.

Theorems

Fundamental Theorem of Arithmetic: Every integer greater than 1 is either a prime number or can be uniquely expressed as a product of prime numbers.

Suitable Grade Level

Grades 9-11