If - -3 2x-5- 4 1 - is a singular matrix then find x

Given, #160; [ 3 amp; 2x 5 #160;; 4 amp; 1 #160; ] =0 ⇒ 3 ( 1 ) 4 ( 2x 5 )=0⇒ 3 8x+20=0 ⇒ 8x+17= 0⇒ x=17/8 ...

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Singular and Non Singualar Matrices

If [ -3 2x...

Question

If $[\begin{matrix} - 3 & 2 x - 5 4 & 1 \end{matrix}]$ is a singular matrix then find x

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[\begin{matrix} - 3 & 2 x - 5 4 & 1 \end{matrix}]

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A = ⎡ ⎢ ⎣ \begin{matrix} 2 & 2 & 3 1 & - 2 & 3 x & 1 & - 1 \end{matrix} ⎤ ⎥ ⎦

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⎡ ⎢ ⎣ \begin{matrix} 1 & 2 & x 4 & - 1 & 7 2 & 4 & 6 \end{matrix} ⎤ ⎥ ⎦

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⎡ ⎢ ⎣ \begin{matrix} 2 + x & 3 & 4 1 & - 1 & 2 x & 1 & - 5 \end{matrix} ⎤ ⎥ ⎦

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| A d j A |

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