On the GMAT we are told by the GMAC that: the value of 4^2
has two values, +2 and -2. However the value of Square root of 4 has only one value, 2.
However, 4^1/2 equals square root 4. So my problem is, when you translate between fractional exponents and roots, what happens with the rule?
If the GMAT write down 4^1/2, does that mean if I translate it to square root 4 I only have 1 answer? Because 4^1/2 sorta has two answers. Or is it that you always need to translate 4^1/2 into square root 4 because its not proper to have fractional exponents?
Someone help, thanks