Final answer:
The expression √6 + √18 + 3√3 simplifies into √6 + 3√2 + 3√3. Additional information is required to further simplify or compare this expression.
Step-by-step explanation:
This mathematics question involves simplifying an expression with square roots, which is a topic typically studied in high school. The expression in the question is slightly unclear due to the lack of operators between some terms. However, let's assume the question intended to ask which of the following is equivalent to the expression √6 + √18 + 3√3. The first step to answer this is to simplify the square roots, if possible. We know that √18 = √(9*2) = 3√2, so the expression can be rewritten as √6 + 3√2 + 3√3. However, without additional information or options to choose from, there's no further simplifications that can be made to this expression.
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