Question

Solve for x: 2x^2 - 4x - 14 = 0

Answer 1

\[x^2 -2x - 7=0\]
\[x^2 - 2x - 7 +1 -1 =0\]
\[ (x-1)^2= 8\]
\[x -1=\pm 2\sqrt{2}\]
\[x = 1 \pm 2\sqrt{2}\]