Is 1/5 a rational number? ? i need asap

In the figure dhg fhe which statement is true by cpctc

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).

Y=4x^2+x-1 solve using quadratic formula