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(D) Let $\Delta = \left|\begin{array}{ccc}x+2 & x+3 & x+5 \ x+4 & x+6 & x+9 \ x+8 & x+11 & x+15\end{array}ight|$.Apply operations $R_2 ightarrow

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$-2$

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(D) Let $\Delta = \left|\begin{array}{ccc}x+2 & x+3 & x+5 \ x+4 & x+6 & x+9 \ x+8 & x+11 & x+15\end{array}ight|$.Apply operations $R_2 ightarrow R_2 - R_1$ and $R_3 ightarrow R_3 - R_1$, we get:$\Delta = \left|\begin{array}{ccc}x+2 & x+3 & x+5 \ 2 & 3 & 4 \ 6 & 8 & 10\end{array}ight|$.Apply operation $C_2 ightarrow C_2 - C_1$ and $C_3 ightarrow C_3 - C_1$, we get:$\Delta = \left|\begin{array}{ccc}x+2 & 1 & 3 \ 2 & 1 & 2 \ 6 & 2 & 4\end{array}ight|$.Expand along $R_1$:$\Delta = (x+2)(4-4) - 1(8-12) + 3(4-6)$$\Delta = (x+2)(0) - 1(-4) + 3(-2)$$\Delta = 0 + 4 - 6 = -2$.

$\left|\begin{array}{ccc}x+2 & x+3 & x+5 \\ x+4 & x+6 & x+9 \\ x+8 & x+11 & x+15\end{array}\right|$ is equal to

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