$\begin{aligned} & \text{જો }\left|\begin{array}{ccc}n^2 & (n+1)^2 & (n+2)^2 \\ (n+1)^2 & (n+2)^2 & (n+3)^2 \\ (n+2)^2 & (n+3)^2 & (n+4)^2\end{array}\right|=\Delta \text{અને } \\ & \left|\begin{array}{ccc}1 & -4 & 7 \\ -2 & 3 & -5 \\ 3 & x & -3\end{array}\right|=2 \Delta+1, \text{હોય તો} x=\end{aligned}$

  • A
    $3$
  • B
    $4$
  • C
    $5$
  • D
    $6$

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Similar Questions

ધારો કે $\alpha$ અને $\beta$ એ સમીકરણ $x^2 + x + 1 = 0$ ના બીજ છે. તો $\mathbb{R}$ માં $y \ne 0$ માટે,નિશ્ચાયક $\left| \begin{array}{ccc} y + 1 & \alpha & \beta \\ \alpha & y + \beta & 1 \\ \beta & 1 & y + \alpha \end{array} \right|$ ની કિંમત શોધો.

$\left|\begin{array}{ccc}x+2 & x+3 & x+5 \\ x+4 & x+6 & x+9 \\ x+8 & x+11 & x+15\end{array}\right|$ ની કિંમત શોધો.

સમીકરણ $\left|\begin{array}{ccc}x^2+2x & x+2 & 1 \\ 2x+1 & x-1 & 1 \\ x+2 & -1 & 1\end{array}\right|=0$ ના ધન બીજોનો સરવાળો શોધો.

જો $a \ne 6, b, c$ એ $\left| \begin{array}{ccc} a & 2b & 2c \\ 3 & b & c \\ 4 & a & b \end{array} \right| = 0$ નું સમાધાન કરે,તો $abc = $

જો $A_{\lambda} = \begin{bmatrix} \lambda & \lambda - 1 \\ \lambda - 1 & \lambda \end{bmatrix}; \lambda \in N$ હોય,તો $|A_1| + |A_2| + \dots + |A_{300}|$ ની કિંમત શોધો.

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