(a+1)(a-1)(A2+1) Share with your friends Share 0 Shruti Tyagi answered this Dear student, Assuming the question is a+1a-1a2+1We have,a+1a-1a2+1=a2-1a2+1 --[using x2-y2=x+yx-y]=a4-1 --[using identity again x2-y2=x+yx-y] Regards 1 View Full Answer