Write a function called roots$($a$,$ b$,$ c$)$ that given three coefficients a and b and c prints a

nicely formatted message displaying the equation and its two roots $($the two roots may be

the same number$).$ You may assume that a is a non zero number, and that a and b and c

are such that b$2-4$ac is a positive number. $($Do you know why we are making this

assumption?$)$