Minus one times minus one

Answer 1

one

remember it this way:

if something good happens to someone good, it's good (positive x positive = positive)

if something bad happens to someone good, it's bad (positive x negative = negative)

and finally, if something bad happens to someone bad, it's good (negative x negative = positive).

but really, just ask your math teacher and get a tutor if you need to. best of luck in your studies.