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4x-8x = -4x

√-4x stands. However, x could not possibly be a positive number, because:

(Negative) X (Positive) = (Negative) The square root of a negative number

is undefined-so...

(√-4x) + 9 Is your answer.

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โˆ™ 2011-12-20 23:37:11
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Q: What is the square root of 4x-8x plus 9?
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