The value of $$\sqrt[3]{343}$$ is $$\underline{\quad}$$ .

Question Analysis
This question tests the understanding of evaluating cubic roots, specifically for negative inputs.

Key Concept Explanation
The cubic root function, , returns the value that, when cubed, gives the input. For negative inputs, the cubic root is also negative.

Step-by-step Solution
1. Identify the input:
2. Find the value that, when cubed, equals