Question

0 = x2 + 10x + 5 how to solve this equation by completing the square and using the quadratic formula?

Answer 1

\[x^2+10x=-5\]
\[(x+5)^2=-5+25=20\]
\[x+5=\pm\sqrt{20}=\pm2\sqrt{5}\]
\[x=-5\pm2\sqrt{5}\]