A couple of quadratic questions

1. sketch 2 parabolas which does not have any roots. explain.

^ how do i do that? like there's no graph or anything for it, and it's only worth 1 mark.

2. factor 2x(x+1) - 2(x+1)

3. state the y-int. of y=-3(x+1)

parabolas that do not touch the x axis

2x(x + 1) - 2(x + 1)

2(x + 1)(x - 1)

y = - 3(x + 1)

y = - 3x - 3

- 3