Posted by Alex on Wednesday, May 2, 2012 at 11:38am.
3^-2 = 1/3^2 = 1/9
2^-2 = 1/2^2 = 1/4
1/9 - 1/4 = -5/36
(-5/36)^-1 = 1/(-5/36) = -36/5
Related Questions
algebra - Which of the following is equivalent to the expression (t2 −...
chemistry - For which of these elements would the electron affinity process ...
chemistry - For which of these elements would the electron affinity process ...
math - For the next three problems, evaluate each expression if x = −2...
Maths - An irregular octagon R has vertices 6, 2), (2, 6), (−1, 5), (&...
Chemistry - In the redox conversion of CO to CO2− 3 , the oxidation ...
algebra help!!!! - Add: b^−3 ca^−1 −xc^−...
Math Trig - 13. What is the equation of a cosine function with amplitude 3, ...
algebra ll - Which choice is the equation of a line that passes through the ...
Math - Find a system of linear equations corresponding to the following ...
For Further Reading
