SOLUTION: How would I simplify ²√16x^4? What is the index in the front used for and what do I do with it? How would I simplify the x^4 and why in this manner?

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Question 778622: How would I simplify ²√16x^4?
What is the index in the front used for and what do I do with it?
How would I simplify the x^4 and why in this manner?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
simplify ²√16x^4?
Generally understood to be sqrt%2816x%5E4%29 "The square root of:"
Factor inside the radical to reveal perfect squares
sqrt%284%2A4%2Ax%5E2%2Ax%5E2%29
Extract the square root of those perfect squares you have
2*2*x*x which is: 4x^2