Examine whether [[$ x = 9 $]] is the solution of the equation.

a) [[$ x^2 - 9x = 0 $]]

Answer: [[$ x = 9 $]] is is not a solution to the equation.

b) [[$ 3x^2 - 3x = 0 $]]

Answer: [[$ x = 9 $]] is is not a solution to the equation.

c) [[$ 6x^2 - 54x = 0 $]]

Answer: [[$ x = 9 $]] is is not a solution to the equation.

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