7x 2 4 5x July 8, 2019 16 32 64 128 7x 2 )( 5x 4 )= 0 7x 2 4 1 5x 3 7x 2 2 4 5x )= 1 8 4 7x 2 4 5x 3 7x 2 4 )-( 3x 2 5x 1 3x 2 7x 4 5x 6 3x 2 7x 4 =- 5x 7x 2 5x 1 )+ 4 5x 1 2x 2 7x 4 )( 5x 3 7x 2 6 x 5x 4 3 4x 7x 3 x 4 )= 2 5x 6 2 5x 4 7x 5 14x 5x 4 7x 2 12 0 3x 4 5x 7x 2 8x 4 5x 4 5x 2 )= 7x 5