Please;

how do I get

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- Jan 12th 2013, 07:01 AMmarijakopljarRoot-simple,but...
**Please;**

how do I get - Jan 12th 2013, 08:28 AMkalyanramRe: Root-simple,but...
- Jan 12th 2013, 06:10 PMProve ItRe: Root-simple,but...
How do you get this equation? How should we know?

Perhaps you're really asking how do you SOLVE this equation? - Jan 12th 2013, 07:08 PMHallsofIvyRe: Root-simple,but...
What you wrote is the same as . What you perhaps intended was

But "how do I get" an equation usually means "how do I show that these are the same for all x". And what you have**isn't**. For example if x=3, the left side (of both of those) is while the right side of the last is , NOT 2. For the first, it is 1/3- 1= -2/3.

If you mean "how do I solve ?} the simplest thing to do is get rid of the square roots by squaring both sides: which, mutiplying both sides by gives so you have to solve the cubic equation . However, that has no rational number roots so I doubt if that is what you mean. - Jan 13th 2013, 04:08 AMibduttRe: Root-simple,but...
There is some doubt in the explanation. What do you want to do??