SOLUTION: {{{sqrt(28n^2)}}} i know that the answer is 2n radical 7 but i dont know how to show the work

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Question 31962This question is from textbook Prentice Hall Mathematics
: i know that the answer is 2n radical 7 but i dont know how to show the work This question is from textbook Prentice Hall Mathematics

Answer by mbarugel(146)   (Show Source): You can put this solution on YOUR website!
Hello!
You have:

Which is the same as:

This leaves us with:

now, 28 = 7*4, so we get:

And finally,


I hope this helps!
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