Precalculus Examples

Set the polynomial equal to to find the properties of the parabola.
Complete the square on the right side of the equation.
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Use the form , to find the values of , , and .
Consider the vertex form of a parabola.
Find the value of using the formula .
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Multiply by to get .
Reduce the expression by cancelling the common factors.
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Divide by to get .
Find the value of using the formula .
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Simplify each term.
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Multiply by to get .
Simplify the numerator.
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Remove parentheses around .
Raising to any positive power yields .
Simplify the denominator.
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Remove parentheses.
Multiply by to get .
Multiply by to get .
Divide by to get .
Multiply by to get .
Add and to get .
Substitute the values of , , and into the vertex form .
Use the vertex form, , to determine the values of , , and .
Find the vertex .
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