Brightstorm is like having a personal tutor for every subject
See what all the buzz is aboutCheck it out
Radicals and Absolute Values - Problem 4 285 views
Since the square root of x is technically defined as the absolute value of x, we should be writing absolute value signs when we're doing other square roots of variables as well. Sometimes texts say, "assume all variables represent positive values," which means you don't need to worry about this at all. Otherwise, odd powers of variables coming from even roots will need absolute values.
Transcript Coming Soon!