Given that the zeroes of the cubic polynomial \(y^3 - 12y^2 + 47y -60\) are of the form \(a\), \(a + b\), \(a + 2b\) for some real numbers \(a\) and \(b\), find the values of \(a\) and \(b\) as well as the zeroes of the given polynomial.
 
Answer:
 
Values of a \(=\)     and  b \(=\)   (or) a \(=\) and b\(=\)
 
Zeroes of the polynmial  are , and
 
[NOTE: Give the values of a and zeros in ascending order]