Math Problem Statement

simplify the square root of fifty four

Solution

To simplify the square root of 54, we follow these steps:

  1. Find the prime factors of 54:

    • 54=2×2754 = 2 \times 27
    • 27=3×927 = 3 \times 9
    • 9=3×39 = 3 \times 3

    So, the prime factorization of 54 is: 54=2×3×3×3=2×3354 = 2 \times 3 \times 3 \times 3 = 2 \times 3^3

  2. Pair the factors under the square root: 54=2×3×3×3\sqrt{54} = \sqrt{2 \times 3 \times 3 \times 3}

  3. Identify and simplify perfect squares:

    • The factor 3×3=93 \times 3 = 9 is a perfect square.

    Therefore: 54=(3×3)×(2×3)=36\sqrt{54} = \sqrt{(3 \times 3) \times (2 \times 3)} = 3\sqrt{6}

So, the simplified form of 54\sqrt{54} is:

54=36\sqrt{54} = 3\sqrt{6}

Would you like more details or have any questions?

Related Questions:

  1. How do you find the prime factorization of a number?
  2. How do you simplify square roots of non-perfect square numbers?
  3. What are perfect squares and how do they help in simplifying square roots?
  4. How do you simplify expressions with higher roots, like cube roots?
  5. Can you simplify 72\sqrt{72} using the same method?

Tip: Always look for the largest perfect square factor of the number under the square root to simplify it efficiently.

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Math Problem Analysis

Mathematical Concepts

Square Roots
Prime Factorization
Simplifying Radicals

Formulas

Prime factorization of a number
Simplification of square roots \( \sqrt{a \times b} = \sqrt{a} \times \sqrt{b} \)

Theorems

Perfect Square Theorem

Suitable Grade Level

Grades 7-9