Algebra-1

Question Analysis
This question tests the student's ability to simplify a radical expression by factoring it into prime factors and extracting the perfect square.

Key Concept Explanation
Simplifying radicals involves breaking down the radicand into its prime factors and then extracting any perfect squares. For example, in , we factor 245 into , and then extract the perfect square .

Step-by-step Solution
1. Factor 245 into its prime factors: