Question 234517
We have 1/(sqrt{3x - 5}).

You have to multiply the top and bottom by sqrt{3x + 5}.

I will set it up and you can finish.

1/(sqrt{3x - 5}) times (sqrt{3x + 5})/(sqrt{3x + 5})

Can you finish now?

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To answer your questions concerning (-25).


The answer to your question is no.

When multiplying two radicals, the radicals are removed.

Your denominator is sqrt{3x - 5) times sqrt{3x + 5}.

That simply becomes 9x^2 - 25.