PLEASE help me solve this question! I really need to solve this question ASAP! No nonsense answers, and please attach the solution.

Answer:
{-0.5, 0.1}
Step-by-step explanation:
[tex]x = \frac{8 \pm \sqrt{(-8)^2 - 4 \cdot -20 \cdot 1}}{-40} = \frac{8 \pm 12}{-40}[/tex]
so x is 20/-40 = -0.5 or x = -4/-40 = 0.1