Use MATLAB

Find all the roots in 13x^3+182x^2+2503=0. Plot y=13x^3+182x^2+2503 around the real root to verify that your real root is indeed correct. The abscissa of your plot should be x with a range of 1 (e.g., [3.5, 4.5] or [-4.5, -3.5]). Label your y-axis with y and x-axis with x. Put grid lines on the plot. The grid lines should be spaced no more than 0.1 on x-axis.

describe your approach, present and explain yours results