Question 232498
{{{(2/7)^-2}}}

Because of the negative exponent, it means to INVERT the fraction.  Because of the 2 exponent, it means to SQUARE the result:


{{{(7/2)^2}}}


{{{ 49/4}}}


For additional help with the LAWS of EXPONENTS, please visit my own website.  Do a "Bing" or "Google" search for my last name "Rapalje".  Look for "Rapalje Homepage" near the top of the search list.  From my Homepage, look for "Basic, Intermediate, and College Algebra: One Step at a Time."  Select "Basic Algebra" and look in "Chapter 2" for "Section 2.12 (Positive Exponents)" and "Section 2.13 (Negative Exponents).  These sections are supported by my "MATH IN LIVING COLOR" pages in which I solved problems IN COLOR!


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus