Question

Let $\begin{vmatrix} x-1&2&1\\\2&x-1&2\\\1&x+2&x-1 \end{vmatrix}=ax^3+bx^2+cx+d$, where a,b,c and d are constants. Then the value of d is

• A. -8
• B. 6
• C. 0
• D. -6
• E. 16

Answer 1

Answer: (E)

16

Answer 2

The correct option is (E): 16