Question

if both x-1 and x+1 is factor of ax3 + x2 -ab+b what is valur of a and b

Answer 1

Answer:

ist condition

x-1=0

x=1

putting value

ax3+x2+ab+b

a+1+ab+b=0~i

2nd condition

x+1=0

x=-1

putting value again

-a+1+ab+b=0~ii