October 2018 2 22 Report

zad.1 Zapisz jak najkrócej :

a) 2x + 3y + 4x + 5y =

b) 8k + 5u - 2k - 3u =

c) 6x + 15y - 5x + 14z - 15y - z =

zad.2 Doprowadź do najprostrzej postaci i oblicz wartość wyrażenia.

a) 1 + 5a - 6a - 2 jeśli a=3

b) 2x - 5y + 3x + 3y - x jeśli x = 2 , y = -1


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