If the matrix A=8-62-67-42-41 is a singular matrix then λ=

A=8-62-67-42-41|A|=0⇒8(7λ−16)+6(−6λ+8)+2(24−14)=0⇒56λ−128−36λ+48+48−28=0⇒20λ−60=0⇒λ=3

If the matrix A=8-62-67-42-41 is a singular matrix then λ=

A=8-62-67-42-41|A|=0⇒8(7λ−16)+6(−6λ+8)+2(24−14)=0⇒56λ−128−36λ+48+48−28=0⇒20λ−60=0⇒λ=3

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If the matrix $A = [\begin{matrix} 8 & - 6 & 2 \\ - 6 & 7 & - 4 \\ 2 & - 4 & 1 \end{matrix}]$ is a singular matrix then $λ =$

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$A = [\begin{matrix} 8 & - 6 & 2 \\ - 6 & 7 & - 4 \\ 2 & - 4 & 1 \end{matrix}]$

$| A | = 0$

$\Rightarrow 8 (7 λ - 16) + 6 (- 6 λ + 8) + 2 (24 - 14) = 0$

$\Rightarrow 56 λ - 128 - 36 λ + 48 + 48 - 28 = 0$

$\Rightarrow 20 λ - 60 = 0$

$\Rightarrow λ = 3$

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If the matrix A=8-62-67-42-41 is a singular matrix then λ=

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If the matrix $A = [\begin{matrix} 8 & - 6 & 2 \\ - 6 & 7 & - 4 \\ 2 & - 4 & 1 \end{matrix}]$ is a singular matrix then $λ =$