Related Post: F 2 F 3 F-2 F-35 F 2 F X 3x 1 F 2 )+ F 3 )- F 1 F 1 )=- 2 F 3 )= 4 F 2 )+ F 3 )= F 5 F X 2 F 3 2f 2 F 6 3f 4f (- 6 F 2+ 4 5 F 3 F X )=- 3x 2 F 3