# Convert to Set Notation x^2-4x+4<=0

Solve .
Convert the inequality to an equation.
Factor using the perfect square rule.
Rewrite as .
Check the middle term by multiplying and compare this result with the middle term in the original expression.
Simplify.
Factor using the perfect square trinomial rule , where and .
Set the equal to .
Add to both sides of the equation.
Use the inequality to build the set notation.
Convert to Set Notation x^2-4x+4<=0