¿Qué son los números inconmensurables?

Pls , the question is in the picture!

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?