10x 3 4x 2 5x 2 July 8, 2019 16 32 64 128 5x 3 4x 2 10x 20 (- 10x 2 5x 3 )-( 4x 2 6x 7 4x 5x 2 )-( 10x 3 )( 2x 7 )= 133 (- 10x 2 4x 3 )-( 5x 2 4x 9 20x 3 4x 2 10x 1 )/( 5x 1 10x 3 5x 2 1 )/( 2x 3 4x 2 x 2 10 - 2(3x + 5) = 4(x - 2)