а) 1. 3²-1= 9-1=8
2. -1/4²-1 = 1/8-1=1/8-8/8=-7/8
3. 0.1²-1= 0.01-1= -0.99
4. 0.2²-1= 0.04-1 = -0.96
5. -1 3/4² - 1 = 1 9/16 - 1 = 25/16 - 16/16 = 9/16
б) 1. 1-(-1)³=1+1³=2
2. 1-(-1/2)³ = 1+1/2³ = 1+1/8= 1 1/8
3. 1-0.3³ = 1-0.027= 0.973
4. 1-(-0.01)³ = 1+0.01³ = 1+0.000001=1.000001