Please explain what the vertical lines mean.
In the first step, why did the (-3+6) with the -2 exponent get changed to 1 over 3 to the second power?
I need expansion on this solution, please
Where are all these extra "x"'s coming from on the bottom of this equation? Thanks for you help!
how did you get rid of the 3s?
I still dont understand how I got the answer
help. step by step rules used
how does the -4b become +4b in the second last step
how do I create square as part of the equation?
I am confused. Why is -a not the common numerator and denominator?