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Real Number q how to solve

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by yogami » Sun Jul 12, 2009 8:46 pm
maybe you did not place the brackets right
it should be
sqrt(1 - sqrt(2 - sqrt(x)))
So this means that the inner most sqrt is sqrt(x) which needs to be less than or equal to 2 in order for (2 - sqrt(x)) to be positive. and the only value which yields a negative is if x is five
200 or 800. It don't matter no more.
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by tj123 » Sun Jul 12, 2009 9:26 pm
yes you are correct. i wrote it wrong.
it was hard to see that for some reason

can you please do the math for me to explain how the result is not a real number? I thought every number is a real number...?
what is not a real number
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