Question

n^2 - 4n - 1 = 0
Solve using the quadratic formula and simplify

Answer 1

\[\large n = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\]
\[\Large \implies n = \frac{-(-4) \pm \sqrt{(-4)^2 - 4(1)(-1)}}{2(1)}\]
does that help?

Answer 2

Yes, thank you. I was struggling with these.