1.
Całkowite : -2 , 14 ,∛8 , 0 ,√16 , (∛8 = 2 , √16=4)
Niewymierne : √2 , (√5 / 5) , ∛4 ,
2.
a)
4 * (-2)² - 3 * (-2)³ = 4 * 4 - 3 * (-8) = 16 + 24=40
b)
5 * (-4²) - 7 * (2-2²)= 5 * (-16) - 7 * (2 - 4)= -80 - 7 * (-2)= -80 + 14 = -66
c)
4 * (-3)³ - 6 * (-3²) = 4 * (-27) - 6 * (-9) = -108 + 54 = -54
3.
a)
(1 1/5 + 5/6) * 1 7/8 = (1 6/30 + 25/30 ) * 15/7 = 2 1/30 * 15/7 = 61/30 * 15/7 =
915 / 210 = 4 75/210 = 4 5/14
b)
3 1/4 - 4 2/3 + 1 5/6 = 3 3/12 - 4 8/12 + 1 10/12 = -1 5/12 + 1 10/12 = 5/12
c)
3,1 - 4 1/2 : 3 3/4 = 3,1 - 9/2 : 15/4 = 3,1 - 9/2 * 4/15 = 3,1 - 36/30 = 3,1 - 3,2 = -0,1 = - 1/10
d)
3 1/9 * 3/7 - 3/4 : 1 1/2= 28/9 * 3/7 - 3/4 : 3/2 = 84/63 - 3/4 * 2/3=1 21/63 - 6/12=
1 1/3 - 1/2 = 1 2/6 - 3/6 = 5/6