Precalculus Examples

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Roots (also called zeros) are the points where the graph intercepts with the x-axis .
at the roots
The root at was found by solving for when and ( because the root is the x-intercept).
The factor is
The root at was found by solving for when and ( because the root is the x-intercept).
The factor is
Combine all the factors into a single equation.
Multiply all the factors to simplify the equation .
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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.
Remove parentheses.
Simplify and combine like terms.
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Simplify each term.
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Multiply by by adding the exponents.
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Combine and
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Raise to the power of .
Raise to the power of .
Use the power rule to combine exponents.
Add and .
Move to the left of the expression .
Multiply by .
Multiply by .
Subtract from .
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