Question

12x²+5x-3=0 табыңдарш​

Answer 1

Ответ:

x1= -3/4 x2= 1/3

Пошаговое объяснение:

$12x {}^{2} + 5x - 3 = 0 \\ a = 12⠀⠀⠀b = 5⠀⠀⠀c = - 3$

⠀⠀⠀D=5²-4*12*(-3)=169

$x1 = \frac{ - 5 - \sqrt{169} }{2 \times 12} = \frac{ - 18}{2 \times 12} = \frac{ - 9}{12} = - \frac{ 3 }{4} \\ x2 = \frac{ - 5 + \sqrt{169} }{2 \times 12} = \frac{8}{2 \times 12} = \frac{4}{12} = \frac{1}{3}$