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A technique named "completing the square" is used to rewrite a quadratic equation in what is known as the "standard form." It involves adding and subtracting the equation's variables in order to produce a perfect square trinomial on the left-hand side of the equation.
When the quadratic formula is not able to obtain an answer, completing the square is a useful method for attempting to solve quadratic equations. It can be used to create quadratic functions and calculate a quadratic function's maximum or minimum value.
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