Can you do this to a radical, help with Algebra 2 question....
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Can you do this to a radical, help with Algebra 2 question....

[From: ] [author: ] [Date: 12-03-05] [Hit: ]
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sqrt x^2 + 20x + 100 is in a problem i'm solving and I wanted to ask can you take out the x and 10 from under the radical? Since its sqrt x^2 is x and sqrt 100 is 10.

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No. But x² + 20x + 100 = (x + 10)², so
√(x² + 20x + 100) = ± (x + 10)
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