20
The complex conjugate pair, 2 - 3.4641i and 2 + 3.4641i where i is the imaginary square root of -1.
71
6
-196
47
There aren't any whole numbers that satisfy these conditions. The only numbers that multiply to 23 are 23 and 1.
288
Ten and six.
14 and 2
-137
64
-22
2770