Hello,

Remember that

So how would you transform in the first one ?

For the second one, this is the same : compose each side with logarithm.

For the third one, note that x²-1=(x-1)(x+1)

Then remember that

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- April 15th 2008, 10:29 AM #1

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- April 15th 2008, 11:05 AM #7

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