Question

/ - kreska ułamkowa a)0,75*0,75-5/6-1/2= b)2/3-5/7-1 i 1/3*1 i 1/3= c) (0,6-1/3+0,25) do potęgi2 d)4/5-(0,75+1,2) do potęgi2

Answer 1

a) 

...=3/4 * 3/4 - 5/6 - 1/2 = 9/16 - 5/6 - 1/2 = 

=27/48 - 40/48 - 24/48= - 37/48

b)

...=2/3 -5/7 -4/3*4/3 = 2/3 - 5/7 - 16/9 =

=42/63 - 45/63 - 112/63 = -115/63 = -1  52/63

c

...=(6/10-1/3+1/4)^2 = (36/60 - 20/60 + 15/60)^2=

=(31/60)^2= 961/3600

d)

...= 0,8-(0,75 + 1,2)^2 = 0,8 - (1,95)^2 =

=0,8 - 3,8 = -3