Question

O determinante de B = [2] [1] [0]
[a] [b] [c]
[4+a] [2+b] [c]

Answer 1

$\left[\begin{array}{ccc}2&1&0\\a&b&c\\4 +a&2 + b&c\end{array}\right]$

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Regra de Sarrus

$\left[\begin{array}{ccc}2&1&0\\a&b&c\\4 +a&2 + b&c\end{array}\right] \begin{array}{cc}2&1\\a&b\\4 +a&2 + b\end{array}$


2 * b * c + 1 * c * (4+a) + 0 * a * (2 +b) - (4 + a) *b * 0 - ( 2 + b) * c * 2 - c * a * 1 =0

Det = 0