Posted by chris on Monday, February 15, 2010 at 3:56am.
Why is square root of x squared = absolute x?
Is it because absolute x = x and x?

11th grade  Anonymous, Monday, February 15, 2010 at 5:08am
Wellt the so calles abs: R > R^+_0 function assigns every x its absolute value hence a positive number or zero.
Squaring a number always yields s.th. positive as a result. It follows the statement.

11th grade algebra  PsyDAG, Monday, February 15, 2010 at 3:33pm
Yes, since (x)^2 or x^2 both yield x^2, the square root of X^2 = IxI = absolute value of x.
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