Respostas

2014-03-13T02:03:50-03:00
  \left[\begin{array}{ccc}x&y&1\\-1&8&1\\3&-10&1\end{array}\right] \neq 0 \\  \left[\begin{array}{ccccc}x&y&1&x&y\\-1&8&1&-1&8\\3&-10&1&3&-10\end{array}\right] \neq 0 \\ 8x+3y+10+y+10x-24 \neq 0 \\ 18x+4y-14 \neq 0  :2 \\ 9x+2y-7 \neq 0
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