OPPGAVE 4
a) solve equation by using abc-formula x2 + 3x + 2 = 0
b) solve the equation by calkulater x2 - 2x +1 = -x +1
I think atomsa is referring to the quadratic equation
for $\displaystyle ax^2 + bx + c = 0 $
the solutions are given by
$\displaystyle \frac {-b\pm\sqrt{b^2-4ac}}{2a}$
in this case a=1,b=3,c=2 so
$\displaystyle \frac {-3\pm\sqrt{3^2-4(1)(2)}}{2(1)}$