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Question: If \(\ddot{A} = \left| \begin{matrix} x^{n} & x^{n + 2} & x^{2n} \\ 1 & x^{p} & p \\ x^{n + 5} & x^{...

If A¨=∣xnxn+2x2n1xppxn+5xp+6x2n+5∣=0,\ddot{A} = \left| \begin{matrix} x^{n} & x^{n + 2} & x^{2n} \\ 1 & x^{p} & p \\ x^{n + 5} & x^{p + 6} & x^{2n + 5} \end{matrix} \right| = 0, then p is equal to

A

xn

B

(n+ 1)

C

Either A or B

D

Both A and B

Answer

Both A and B

Explanation

Solution

C1 and C3 become equal for p = xn and R1 and R3 become equal for p = n + 1.