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View Full Version : What is the answer to radical 5x-4 - radical x = 2?


briajp
Nov 14, 2010, 01:08 PM

Unknown008
Nov 14, 2010, 10:43 PM
5x - 4 - \sqrt{x} = 2

You want to solve this equation?

1. Put all the terms on the same side.
2. You can make use of a substitution like y = \sqrt{x} and solve for y as any other quadratic equation.
3. When you're done, substitute y back by \sqrt{x} and solve for x.
4. Reject any solution if necessary.