Mathematics
Answer
By remainder theorem,
The remainder theorem states that when a polynomial f(x) is divided by (x - a), then the remainder = f(a).
Given,
⇒ x + 1 = 0
⇒ x = -1.
Substituting x = -1 in x3 - x2 + x - 1 , we get :
⇒ (-1)3 - (-1)2 + (-1) - 1
⇒ -1 - 1 - 1 - 1
⇒ -4.
Hence, Option 2 is the correct option.
Related Questions
The expression 4x3 - bx2 + x - c leaves remainders 0 and 30 when divided by x + 1 and 2x - 3 respectively. Calculate the values of b and c. Hence, factorise the expression completely.
If x - 3 is a factor of x2 + kx + 15; the value of k is :
8
3
-5
-8
Is (x - 2) a factor of x3 - 4x2 - 11x + 30 ?
yes
no
nothing can be said
none of the above is true