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F x x2 2 2x

F x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2x
F x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2x
F x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2x
F x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2x
F x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2xF x x2 2 2x