Question

solve by the quadratic formula and simplify answer: x^2-3x-1=0

Answer 1

a=1 b=-3 c=-1

plug into:
\[\frac{ -b \pm \sqrt{b ^{2}-4ac } }{ 2a }\]

Answer 2

first calcule the discriminant with formula

D= sqrt(b^2 -4ac)

so and after this

x1 ,x2 = (-b +/- sqrt(b^2 -4ac))/2a = ...

hope that you have understood it right

good luck

bye