Better Students Ask More Questions.
Simplify. (y^x times y^-x)^4
2 Answers | add yours
You need to use the exponential laws, that helps you to evaluate the given exponential expression``, such that:
`y^x*y^(-x) = y^(x + (-x)) => y^x*y^(-x) = y^0 => y^x*y^(-x) = 1`
Raising to 4th power, yields:
`(y^x*y^(-x))^4 = 1^4 => (y^x*y^(-x))^4 = 1`
Hence, performing the indicated operations, using the exponentials laws, yields `(y^x*y^(-x))^4 = 1` .
Posted by sciencesolve on March 23, 2013 at 7:29 PM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.