2.1. Oblicz: |- 2 1/2| + |1 1/2| d) |sqrt(2) – 3| b) |- 2 1/3 + 1 1/3|; |2 – sqrt(5)| c) |-2,6|-|-3,3| f) |- 2sqrt(3) + sqrt(12)|

2.1. Oblicz: |- 2 1/2| + |1 1/2| d) |sqrt(2) – 3| b) |- 2 1/3 + 1 1/3|; |2 – sqrt(5)| c) |-2,6|-|-3,3| f) |- 2sqrt(3) + sqrt(12)|