For a quadratic of the form 
, we can solve by completing the square.
First, we must expand the expression and convert it to the form above.
Completing the square is like forcing a quadratic to be factored like a perfect square trinomial. To do so, we add the square of half of the coefficient b,
, to both sides of the equation.
We then factor like a perfect square trinomial and simplify.
First, we must expand the expression and convert it to the form above.
Completing the square is like forcing a quadratic to be factored like a perfect square trinomial. To do so, we add the square of half of the coefficient b,
We then factor like a perfect square trinomial and simplify.