Precalculus Examples

Find the Equation with Real Coefficients
,
Since the roots of an equation are the points where the solution is , set each root as a factor of the equation that equals .
Expand using the FOIL Method.
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Apply the distributive property.
Apply the distributive property.
Apply the distributive property.
Remove parentheses.
Simplify and combine like terms.
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Simplify each term.
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Use the power rule to combine exponents.
Add and .
Move to the left of the expression .
Multiply by .
Rewrite as .
Multiply by .
Subtract from .
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