M={a,b,c}真包含于{1,3,4,-2,-4,-5,-6}使得不等式ax^2+bx+cM={a,b,c}真包含于{1，3，4，-2,-4,-5,-6}使得不等式ax^2+bx+c

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$M={a,b,c}真包含于{1,3,4,-2,-4,-5,-6}使得不等式ax^2+bx+cM={a,b,c}真包含于{1，3，4，-2,-4,-5,-6}使得不等式ax^2+bx+c$

M={a,b,c}真包含于{1,3,4,-2,-4,-5,-6}使得不等式ax^2+bx+cM={a,b,c}真包含于{1，3，4，-2,-4,-5,-6}使得不等式ax^2+bx+c
M={a,b,c}真包含于{1,3,4,-2,-4,-5,-6}使得不等式ax^2+bx+c
M={a,b,c}真包含于{1，3，4，-2,-4,-5,-6}使得不等式ax^2+bx+c

M={a,b,c}真包含于{1,3,4,-2,-4,-5,-6}使得不等式ax^2+bx+cM={a,b,c}真包含于{1，3，4，-2,-4,-5,-6}使得不等式ax^2+bx+c
ax²+bx+c