What is the factored form of 6n^4-24n^3+18n

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

What is the slope of the line that contains the points (-2,1) and (0,-3)