SOLUTION: simplify the radical expression. note "a" doesnt have to be a positive number 4√a^4

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Question 328919: simplify the radical expression. note "a" doesnt have to be a positive number
4√a^4
Answer by xoapplexx(2) About Me  (Show Source):
You can put this solution on YOUR website!
4 sqrt a^4 is simplified to 4a^2.
This is because:
sqrt a^4 is equal to 'a' times 'a' times 'a' times 'a'.
when you sqrt, you know that a^2 times a^2 is equal to a^4 because 2+2=4.
therefore, the expression can be simplified to 4a^2