Question

AJUDA resolva a equação [1 0 2 2 4 1 3 2 0] =3x

Answer 1

[1+0+2+2+4+1+3+2+0] =3x

15=3x

-3x=-15

x=-15/-3=5

Answer 2

Explicação passo-a-passo:

$\left[\begin{array}{ccc}1&0&2\\2&4&1\\3&2&0\end{array}\right]=[3x]$

$\left[\begin{array}{ccc}1&0&2\\2&4&1\\3&2&0\end{array}\right]\left\begin{array}{ccc}1&0\\2&4\\3&2\end{array}\right]=[3x]$

1×4×0 + 0×1×3 + 2×2×2 - 3×4×2 - 2×1×1 - 0×2×0 = 3x

0 + 0 + 8 - 24 - 2 - 0 = 3x

-18 = 3x

x = -18 ÷ 3

x = -6     alternativa b