Question

if both x minus 2 and 2 x minus 1 hour are factor of a x cube + 5 x + b show that a minus b equals to zero​

Answer 1

x cube + 5x+b

let,

x cube+5x+b=0

5x+b=0-x cube

5x+b=-x cube

b=-X cube-5x

b=-5x^4

b equal to is not zero