What is the difference when 6x3 − 8x2 − 9 is subtracted from 4x3 − 7x2 + 14?

Given f(x) = x − 7 and g(x) = x2 . find g(f( g(f(4))

If value of cos330° is √3/2 then find tan165°.

5, 6, 10 question: a. determine whether the side lengths form a triangle. (explain your reasoning) b. if it is a triangle, determine whether it is a right, acute, or obtuse triangle. (show your work)