Mathematic Problems
1+i10001-i500
1+i10001-i500
=1+i25001-i2250
=1+2i-15001-2i-1250
=2i500-2i250
=2i250·2i250-2i250
=2i-2i250·2i250
=-1250·2i250
=1·2250·i250
=i248·i2·2250
=1·-1·2250
=-2250
1+i10001-i500=-2250