Question

Xét dấu tam thức bậc hai:

\(D\left(x\right)=\dfrac{11x+3}{-x^2+5x-4}\)

\(E\left(x\right)=\left(\left(x^2+\sqrt{3}-1\right)x-\sqrt{3}\right).\left(\left(x^2-\sqrt{7}-1\right)x+\sqrt{3}\right)\)