Hello,

If prove that

is equal to

It seems like a mess. Any suggestions on where to start?

Btw, this problem is from Higher Algebra by H.S Hall and S. R Knight, a textbook that is still used in India even though it was written in the 1800's.

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- April 3rd 2008, 09:38 PMlds09Simplification
Hello,

If prove that

is equal to

It seems like a mess. Any suggestions on where to start?

Btw, this problem is from Higher Algebra by H.S Hall and S. R Knight, a textbook that is still used in India even though it was written in the 1800's. - April 3rd 2008, 11:04 PMJaneBennet
We are assuming that , right? (If not, you could have, say, and and then would be negative.)

Looking at the expression, the best thing to do first looks like eliminating :

We also have , i.e. . So