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Online ProgramWhen solving the equation, \(x^2-9=0\), a student thought they were doing the problem correctly but ended up with the wrong solution. The student's work is below. What did they do wrong and how could you fix the problem?
\(x^2-9=0\)
\(\left(x-3\right)\left(x-3\right)=0\)
\(x-3=0\)
\(x=3\)