This problem was found in my gre test practice guide and i am having trouble understanding why the answer i chose was wrong.
x^2 =16
y^3= 64
Which is bigger x or y?
I chose that they were both equal to 4 however the answer stated that the relationship cannot be determined from the...
Well i understand how the orginal problem 2^30-2^29/2 becomes 2^29 -2^28 because you subract 2^1 from each exponent. Why isn't the 2 at the bottom canceled out? And where is the (2-1) coming from? The rule in the GRE manual for example 5^7/5^4 becomes 5^3 thus cancelling the denominator of 5...
I am trying to work this actual problem that is in my GRE practice book. Looking at the way it is worked i still need help. Please let me know if you could help in any way.