Solve by Completing the Square (x-12)(x+4)=9

Math
Simplify the equation into a proper form to complete the square.
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Expand using the FOIL Method.
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Apply the distributive property.
Apply the distributive property.
Apply the distributive property.
Simplify and combine like terms.
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Simplify each term.
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Multiply by .
Move to the left of .
Multiply by .
Subtract from .
Move all terms not containing to the right side of the equation.
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Add to both sides of the equation.
Add and .
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of .
Add the term to each side of the equation.
Simplify the equation.
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Raise to the power of .
Simplify .
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Raise to the power of .
Add and .
Factor the perfect trinomial square into .
Solve the equation for .
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Take the root of each side of the to set up the solution for
Remove the perfect root factor under the radical to solve for .
Remove parentheses.
Add to both sides of the equation.
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
Solve by Completing the Square (x-12)(x+4)=9

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