How would you solve for this? 3x-5 = 1/2x+2x

Which answer is it for it to be simplified completely?

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Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares