Simplify.

Remove all perfect squares from inside the square root. Assume
\[a\] is positive.
\[\sqrt{108a^6}=\]

1 answer

To simplify the expression \(\sqrt{108a^6}\), we start by factoring out the perfect square terms from inside the square root.

  1. Factor the number 108: \[ 108 = 36 \times 3 = 6^2 \times 3 \]

  2. Factor \(a^6\): \[ a^6 = (a^3)^2 \]

Now we can rewrite \(\sqrt{108a^6}\) by substituting these factors into the expression:

\[ \sqrt{108a^6} = \sqrt{36 \times 3 \times (a^3)^2} \]

  1. Apply the property of square roots: Using the property \(\sqrt{xy} = \sqrt{x} \cdot \sqrt{y}\), we can separate the square root into perfect squares and non-perfect squares:

\[ \sqrt{108a^6} = \sqrt{36} \cdot \sqrt{3} \cdot \sqrt{(a^3)^2} \]

  1. Calculate the square roots of the perfect squares: \[ \sqrt{36} = 6 \quad \text{and} \quad \sqrt{(a^3)^2} = a^3 \]

  2. Combine the results: \[ \sqrt{108a^6} = 6 \cdot a^3 \cdot \sqrt{3} \]

  3. Final answer: Therefore, the simplified form is:

\[ \sqrt{108a^6} = 6a^3\sqrt{3} \]

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