Graph x^2-18x+81<=0

Graph x^2-18x+81<=0
Convert the inequality to an equation.
Factor using the perfect square rule.
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Rewrite as .
Check that the middle term is two times the product of the numbers being squared in the first term and third term.
Rewrite the polynomial.
Factor using the perfect square trinomial rule , where and .
Set the equal to .
Add to both sides of the equation.
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