root of -1 is i ,then i^2= -1.But i^2=whole root of -1*-1,and -1*-1 will become +1 no.I know that if 2 same numbers inside sq root may taken out as one,but inside whole root of -1*-1 it will become root of 1 no .please explain hope it will understand.

root of -1 is i ,then i^2= -1.But i^2=whole root of -1*-1,and -1*-1 wi

1.	root of -1 is i ,then i^2= -1.But i^2=whole root of -1-1,and -1-1 will become +1 no.I know that if 2 same numbers inside sq root may taken out as one,but inside whole root of -1*-1 it will become root of 1 no .please explain hope it will understand.
Answer» root of -1 is i ,then i^2= -1.But i^2=whole root of -1-1,and -1-1 will become +1 no.I know that if 2 same numbers inside sq root may taken out as one,but inside whole root of -1*-1 it will become root of 1 no .please explain hope it will understand.