Question

$(frac{1}{2m^{1/2}} - frac{m^{3/2} }{2} )*( frac{ m^{1/2}+1 }{m^{1/2}-1} - frac{ m^{1/2}-1 }{m^{1/2}+1})$

Answer 1

((1-m^2)/2m^1/2)*(4m^(1/2)/(m-1))=4(1-m)(1+m)m^(1/2)/[2m^(1/2)*(m-1)]=

=-2(1+m)