Free points btw look at this my new profile pic

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).

Sum is 17 and their difference is 3

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?