Solution

153655

First name
Harry
School
St Stephens School
Country
Age
0

1f) 6x^2+bx-20

Factorised can be (3x+a)(2x-b) or (6x+a)(x-b)

a and b must multiply to give -20 so the pairs can be:
-4 and 5
4 and -5
-20 and 1
20 and -1
-10 and 2
10 and -2

B=1,-1,-19,19,-8,8