Find the length of ab

Which of the following statement about pascal's triangle are true?

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)