One of these expressions reduces to 1 and the other reduces to –1. Do you know which one is which? How do you know? x + 3 3 + x 3 βˆ’ x x βˆ’ 3 x + 3 3 + x = The numerator of the expression 3 βˆ’ x x βˆ’ 3 can be written as . 3 βˆ’ x x βˆ’ 3 =