144k views
2 votes
Can someone please explain me why it was switched from - to +

Can someone please explain me why it was switched from - to +-example-1

1 Answer

1 vote
that's because the denominator is negative and when you simplify it then the denominator gets cancelled and becomes -1 therefore the sign moves to the numerator and it becomes negative
User Rrcal
by
5.0k points