Question

please tell this answer​

Answer 1

Answer:

p +1=o, p=-1

P-l=0-P=l

ap^3+p^2-2p+b=o

put p=-l

ax-l+I+2+b=0

- a+3+b=o

- a+b = -3.

-a+b=-3 (1)

put p=1

axl+I-2 +b=0

a-I+b=0

a+b=I (2)