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Multiple choice

If $a > b > c$, $a\neq 0$ and the system of equations $ax+by+cz=0$, $bx+cy+az=0$, $cx+ay+bz=0$ has non-trivial solutions, then the roots of the quadratic equation $at^2+bt+c=0$.

  1. Are imaginary

  2. Are real and equal

  3. Are real and distinct

  4. May be real of imaginary

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