- #1
MatheusMkalo
- 15
- 0
(-3)² = ([tex]\sqrt{9}[/tex])² --> True
-3 = [tex]\sqrt{9}[/tex] --> False
Wolfram Alpha result: False
-3 = [tex]\sqrt{9}[/tex] --> False
Wolfram Alpha result: False
Last edited:
micromass said:The square root of x is defined as the unique POSITIVE number who's square is x.
KingNothing said:When you "undo" a squared operation, it is not as simple as just removing the little "2" superscript.
Really? In my classes, we've always used [tex]\sqrt[]{x^{2}}=\pm x[/tex]
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