1. For a cubic equation, The following formula gives its general solution is available (https://sciencing.com/solve-cubic- equations-8136094.html). x = (q + [q + (r_p)]/2)/3 + (q[q + (r_p)]/2)/ + p where q=p + bc-3ad 6a ax + bx + cx+ d = 0. 3a = za r = Write C code for this formula, and use it to solve two examples that you choose.