SOLUTION: If a quadratic was not factorable, what might be your back up plan to solve it?

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Question 881539: If a quadratic was not factorable, what might be your back up plan to solve it?

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Complete the Square.

If a quadratic expression is not factorable into a product of two binomials, the representation of the quadratic expression as a rectangle can be adjusted using a term for a missing square piece. Part of the result will be factorable and part of it is kept as a square constant term.

Another alternative, is to use the solved result of completing the square, The General Solution of a Quadratic Equation.

If you need it, Meaning of Completing the Square
AND
Solve Quadratic Equation using Completing the Square