Question

Решите уравнение
4х^2-9х-12=0

Answer 1

4x² - 9x - 12 = 0

D = b²- 4ac = 81 + 4·4·12 = 273

$x_1=\dfrac{-b+\sqrt{D}}{2a}=\dfrac{9+\sqrt{273}}{8};\\\\x_2=\dfrac{-b-\sqrt{D}}{2a}=\dfrac{9-\sqrt{273}}{8}$

Answer 2

::::::Объяснение:::::::