I have this equation in factored form right here. h(x)=(x+1) (-x-1) (x+2) (x-1)
i understand that the answers -1, -2, and 1.
What i don't understand is how is this one (-x-1) not -1.
Like you set it to zero -x-1=0
Add one -x=1
Divide x=-1
I probably did something wrong but help please ):