10 negative 15 July 8, 2019 16 32 64 128 10 minus negative 15 10 plus negative 15 10 times negative 15 10 power negative 15 10 to the negative 15th power 10 raised to negative 15 10 divided by negative 15 10 to the negative 15th 10 to the negative 15 prefix Negative 10 plus positive 15