what do you do with a -1/2 power? 1/2 is root but what do you do with minus half? and do you apply it to thE WHOLE rhs or just the individual terms>?
ah, is it (1/y^2)^-1/2 = 1/(1/(sqrt(y^2)) = 1/(1/y) = y
same thing to the rhs?
so it becomes 1/(sqrt(rhs))?