9x 4 6 3x July 8, 2019 16 32 64 128 4 9x 1 3x 6 3 10 4 3x 6 9x 7 7x 9x 4 27x 6 3x 3 9x 6 3x 4 90 9x 3 2x 4 )= 3x 6 The expression 9x 4 27x 6 3x 3 is equivalent to 3x 4 6 9x 12 9x 7 )/ 5 3x 4 )/ 6 9x 6 18 20x 4 3x