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e) y0 o.25x -> x =y/0,25
f) k=1/4n ; n=4k
g) y= 2t-1 ; t= (y+1)/2
h) v= at (do potegi 2)/2 ; a=2v/t(kwadrat)
i) P=abc/4R
R=a/K
e) y=0,25x |: 0,25
x=y/0,25
f) k=1/4n |:1/4
n=k : 1/4
n=k*4
n=4k
g) y=2t-1
2t=y+1 |:2
t=(y+1):2
h) v=at²/2 |*2
at²=2v |:t²
a=2v/t²
i) R=abc/4P |:abc
4P=abc/R |:4
P=abc/4R