View Full Version : Simplify exponentials
sim0nz12345
Aug 25, 2007, 07:04 PM
How would you simplify this problem...
Tried everything but nothing works for me
Work attached below
kt1205
Aug 25, 2007, 07:05 PM
There isn't any numbers??
Capuchin
Aug 25, 2007, 07:31 PM
You need to use difference of squares.
x-y = (\sqrt{x}-\sqrt{y})(\sqrt{x}+\sqrt{y})
I assume you're fine from there :)
sim0nz12345
Aug 25, 2007, 07:42 PM
What if it was the reciprocal of it and the + sign in the original equation was changed into a -
So it would look like this :
root(x)-root(y)/ x-y
Capuchin
Aug 25, 2007, 09:48 PM
Just apply the same logic.