Find the Domain y=(4x-20)/(x^2-10x+25)

Set the denominator in equal to to find where the expression is undefined.
Solve for .
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Factor using the perfect square rule.
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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 the equal to .
Add to both sides of the equation.
The domain is all values of that make the expression defined.
Interval Notation:
Set-Builder Notation:
Find the Domain y=(4x-20)/(x^2-10x+25)

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