text: Hello\n\nStep 1:  1/(-1)=-1/1  is OK\nStep 2: [1/(-1)]^1/2=[(-1/1)]^1/2  is OK\nThis is equal to:  i=i\n\nStep 3: [(1)^1/2]/[(-1)^1/2]=[(-1)^1/2]/[(1)^1/2] is wrong\nIn this step is where you get: \n1/i=i/1\n1/i=i\n1=i^2\n1=-1\n\nAs you see, no need to multiply and cancel to get same result you got.\n\nThe trick was to rearange values in step 1, and later\nsplit the roots on step 3.