Precalculus Examples

To find the roots of the equation, replace with and solve.
Rewrite the equation as .
Factor using the perfect square rule.
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Rewrite as .
Rewrite as .
Check the middle term by multiplying and compare this result with the middle term in the original expression.
Factor using the perfect square trinomial rule , where and .
Set equal to and solve for .
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Set the factor equal to .
Add to both sides of the equation.
Divide each term by and simplify.
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Divide each term in by .
Reduce the expression by cancelling the common factors.
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Cancel the common factor.
Divide by .
The solution is the result of .
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