by Guest » Fri Jul 20, 2018 6:04 am
You have to solve the equation
[tex]- \frac{x^2}{8} + \frac{11x}{8} + \frac32 = 0[/tex]
Multiply the both sides by 8
[tex]- x^2 + 11x + 12 = 0[/tex]
[tex]D = 12^2 - 4\cdot 11 \cdot(-1) = 144 + 44 = 188[/tex]
The roots are
[tex]x_{1,2} = \frac{-11 \pm \sqrt{188}}{-2}[/tex]