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