Question

pleassssssssssee solve itrrr

Answer 1

1^3-10*1^2+9*1+b
1-10+a+b
-9+a+b...........(1)

2^3-10*2^2+a*2+b
8-40+2a+b
-32+2a+b............(2)

(1) or (2)
-32+2a+b
-9+a+b
+ - -
---------------
-21+a
a=21

then
b=-12