9 1 9 3 to the power of 4 July 8, 2019 16 32 64 128 9 1 9 3 to the 4th power 9 minus 1 plus 9 plus 3 to the power of 4 4 to the power 9 4 the power 9 to the power of 3/4 4/9 to the power of 2