4 7x 2x 2 July 8, 2019 16 32 64 128 4 7x 2x 2 0 7x 4 2x 21 7x 4 2 2x 5 Y 4 2x 7x 2 F x )= 4 2x 7x 2 2x 4 7x 2 3 2x 4 7x 2 6 2x 4 7x 2 15 0 Log x 2 4 7x 2x 2 2x 4 7x 3 2x 2 13x 9 2x 4 7x 2 6 0 3 4 x )= 7x 2 2x 3 2x 2 7x 4 factor 2x 4 7x 3 5x 2 2x 2 7x 4 0 discriminant
