A3 + b3 + c3 – 3abc = 0, thena + b + c = 0 or a = b = c⇒ (3X – 1)3 + (4X – 3)3 + (2x + 1)3 = 3(3x – 1) (4x – 3) (2x + 1)⇒ (3x – 1)3 + (4x – 3)3 + (2x + 1)3 – 3(3x – 1) (4x – 3) (2x + 1) = 0⇒ 3x – 1 = 4x – 3⇒ x = 2