The quadratic equation is .
Solve the above quadratic equation by completing the square.
\Consider .
Multiply each side by negative 1.
\Add 7 to each side.
\ \ \
To change the expression into a perfect square trinomial add to each side of the equation.
Here x coefficient = .
So, .
Add to each side.
Take the square root of each side.
\Add 1 to each side.
\.
The solutions are .