If the zeroes of the polynomial x3 - 3x2 + x + 1 are a-b, a and a+b, find a and b.
Zeroes are a − b, a + a + b
Comparing the given polynomial with 
, we obtain
p = 1, q = −3, r = 1, t = 1
The zeroes are 
.
Hence, a = 1 and b = 
or 
.