Question

See attachment.

Answer 1

\[x^2+18x-4=0\]
\[x^2+18x=4\]
\[(x+9)^2=4+81=85\]
\[x+9=\pm\sqrt{85}\]
\[x=-9\pm\sqrt{85}\]

Answer 2

So it'll look like this?

Answer 3

is that right?