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September 15th, 2009, 11:52 AM   #1
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Need help with simplifying radicals plezzzz!!!

I have these two equations with radicals that need simplifying but i have no idea where to even begin! Please help me i would really appreciate it!!!



and

(?(x-6)^2) - (?x -6)^2

for the second equation: in the first part the whole thing in parenthesis is in the square root! In the second part only the X is under the square root. Please help I would really appreciate it! Thank you!
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September 15th, 2009, 12:05 PM   #2
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Re: Need help with simplifying radicals plezzzz!!!

I believe you would rationalize the denominator so put the root 7 +3 and switch the sign then times it by all of them
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September 20th, 2009, 06:51 AM   #3
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20/(?7 + 3) = 20(3 - ?7)/(3 - 7) = 30 - 10?7
28/?7 = (28?7)/7 = 4?7
Their sum is 30 - 6?7, i.e., 6(5 - ?7).

Did you mean ?((x - 6)) - (?x - 6) = |x - 6| - (x - 12?x + 36)
or did you mean (?(x - 6)) - (?x - 6) = x - 6 - (x - 12?x + 36)?
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