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QuestionMathematics

How do you simplify $2 \sqrt{18}$ ?
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Answer

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Step 1:
I'll solve this step by step using the guidelines you specified:

Step 2:
: Simplify inside the square root

- $$18 = 2 \cdot 3^{2}
- First, break down 18 into its prime factors

Step 3:
: Rewrite the square root using prime factorization

- $$\sqrt{18} = \sqrt{2 \cdot 3^{2}}
- = \sqrt{2} \cdot \sqrt{3^{2}}

Step 4:
: Simplify the square root of 3^{2}

- $$\sqrt{3^{2}} = 3

Step 5:
: Rewrite the original expression

- $$2\sqrt{18} = 2 \cdot \sqrt{2} \cdot 3

Step 6:
: Simplify

- $$2\sqrt{18} = 2 \cdot 3 \cdot \sqrt{2}
- = 6\sqrt{2}

Final Answer

6\sqrt{2}