а) x(x+1)−xx(x+1)-xx(x+1)−x/x+1x+1x+1 = x2+x−xx^2+x-xx2+x−x/x+1x+1x+1 = x^2/x+1x+1x+1
б) m+2m+2m+2/4m4m4m - 1/m+4m+4m+4 = m2+2m−4mm^2+2m-4mm2+2m−4m/4m(m+4)4m(m+4)4m(m+4) = m2−2mm^2-2mm2−2m/4m(m+4)4m(m+4)4m(m+4)
а) x(x+1)−xx(x+1)-xx(x+1)−x/x+1x+1x+1 = x2+x−xx^2+x-xx2+x−x/x+1x+1x+1 = x^2/x+1x+1x+1
б) m+2m+2m+2/4m4m4m - 1/m+4m+4m+4 = m2+2m−4mm^2+2m-4mm2+2m−4m/4m(m+4)4m(m+4)4m(m+4) = m2−2mm^2-2mm2−2m/4m(m+4)4m(m+4)4m(m+4)