HELP I need the work too

Use the function nest to evaluate p(x) = 1 + x + · · · + x50 at x = 1.00001. (use the matlab ones command to save typing.) find the error of the computation by comparing with the equivalent expression q(x) = (x51 − 1)/(x − 1).

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)