Math Problem Statement

Express the following square number as the sun of two consecutive natural number

Solution

To express a square number as the sum of two consecutive natural numbers, follow these steps:

  1. Let the square number be n2n^2.
  2. We need to express n2n^2 as the sum of two consecutive numbers. Let's denote these consecutive numbers as xx and x+1x+1.
  3. The sum of these two consecutive numbers is x+(x+1)=2x+1x + (x + 1) = 2x + 1.

We want n2=2x+1n^2 = 2x + 1.

  1. To solve for xx, rearrange the equation:

2x=n212x = n^2 - 1 x=n212x = \frac{n^2 - 1}{2}

So, the two consecutive natural numbers are:

x=n212x = \frac{n^2 - 1}{2} x+1=n2+12x+1 = \frac{n^2 + 1}{2}

Example:

Let's express 2525 as the sum of two consecutive natural numbers.

  1. Here, n=5n = 5, so n2=25n^2 = 25.
  2. Calculate xx:

x=2512=242=12x = \frac{25 - 1}{2} = \frac{24}{2} = 12

  1. The two consecutive numbers are 1212 and 1313.

Thus, 25=12+1325 = 12 + 13.

Would you like further details or have any questions?


Related Questions:

  1. How can any square number be expressed as the difference of two squares?
  2. What is the general formula for expressing any perfect square as the sum of consecutive odd numbers?
  3. Can a square number be expressed as the sum of three consecutive natural numbers?
  4. How do you prove that the sum of any two consecutive natural numbers is always odd?
  5. What is the significance of consecutive sums in number theory?

Tip:

For any square number n2n^2, the sum of two consecutive natural numbers can be found directly using the formula n2=(n21)2+(n2+1)2n^2 = \frac{(n^2 - 1)}{2} + \frac{(n^2 + 1)}{2}.

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Math Problem Analysis

Mathematical Concepts

Number Theory
Algebra

Formulas

Formula for sum of consecutive natural numbers

Theorems

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Suitable Grade Level

Grades 6-8