Question

-3x = 2x² - 1 find the sum of the quadratic equation

Answer 1

Step-by-step explanation:

$\tt \bull \: \: \: {2x}^{2} + 3x - 1 = 0$

$\tt \bull \: \: \: x=\cfrac{-3±\sqrt{3^{2}-4\times 2\left(-1\right)}}{2\times 2}$

$\tt \bull \: \: \: x=\dfrac{-3±\sqrt{9+8}}{2\times 2}$

$\tt \bull \: \: \: x=\cfrac{-3±\sqrt{17}}{4}$

$\tt \bull \: x=\cfrac{\sqrt{17}-3}{4} \\ \tt \: \: \: \: \: \: \: x=\cfrac{-\sqrt{17}-3}{4}$