Go through the list on the left hand side. Complete through
"Solve quadratic equations by completing the square: leading coefficient ≠ 1"
https://www.khanacademy.org/math/algebra/quadratics/solving-quadratics-by-completing-the-square/a/solving-quadratic-equations-by-completing-the-square
YOU MAY NEED TO COPY AND PASTE
"Solve quadratic equations by completing the square: leading coefficient ≠ 1"
https://www.khanacademy.org/math/algebra/quadratics/solving-quadratics-by-completing-the-square/a/solving-quadratic-equations-by-completing-the-square
YOU MAY NEED TO COPY AND PASTE