September 2018 1 12 Report

Podane wyrażenia zapisz w jak najprostszej postaci.

Prosze o pomoc i z mgóry dzięki

a) a-[a-(1-a)]

b) -x-[-(1-x)-(x-1)]

c) x-[y-(x-y)-x-(y-x)]

d) 1-a-[1-(a-1)-2a-(1-3a)]-a-1


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