remember x not= 2 and multiply by (x-2):

x^2 - 6(x-2) = 4,x^2 - 6x + 8 = 0 -- quadratic equation.

x1,2 = 3+-sqrt(3^3-8) = 3+-1 (I used a formula for even b)

x1 = 2 -- NOx2 = 4.

The answer is a.

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