-3-6(x)=12 - X
Please Help and explain really would appreciate it

Which of the following of the following sets of side lengths could not form a triangle?

Tomas used 3 1/3 cups of flour and now has 1 2/3cups left. which equation can he use to find f, the number of cups of flour he had to begin with? f+3 1/3=1 2/3 f-3 1/3=1 2/3 3 1/3f=1 2/3 f/3 1/3=1 2/3

How many and of which kind of roots does the equation f(x)=x3−x2−x+1