Question

giai phuong trinh
x⁴ - 5x² - 2x + 3 = 0

Answer 1

\(\Leftrightarrow\left(x^2-x-3\right)\left(x^2+x-1\right)=0\)

hay \(x\in\left\{\dfrac{1+\sqrt{13}}{2};\dfrac{1-\sqrt{13}}{2};\dfrac{-1+\sqrt{5}}{2};\dfrac{-1-\sqrt{5}}{2}\right\}\)