SOLUTION: square root of (2x+3) = x I got x = -1, 3 but my answer sheet says only x = 3 WHY?

Question 449726: square root of (2x+3) = x
I got x = -1, 3 but my answer sheet says only x = 3 WHY?
Answer by Leaf W.(135) (Show Source): You can put this solution on YOUR website!

You found the solutions correctly, but you must check your answers in all square-root equations like this.
-1 is not an answer because:

<== FALSE!
Sure, if you multiply -1*-1, that equals 1, so technically is correct, but in order to avoid confusion, people have decided to denote only a positive number x as ; negative x is denoted as . For example:
5 is denoted as
-5 is denoted as , NOT
Since

is correct,
***The only solution for x is 3.
I hope that makes sense! =)
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