Question

7. Is (x-1) a
factor of X^3-2x^2-x+2​

Answer 1

Step-by-step explanation:

let p(x)= x^3-2x^2-x+2

zero of (x-1) =1

so x= 1

p(1)= 1^3-2×1^2-1+2

= 0

so , by remainder theorem (x-1) is a factor of p(x)