October 2018 1 22 Report

Zapisz wyrażenia bez nawiasów i wykonaj redukcję wyrazów podobnych:

a) (2x-3)-(x²-3x+1+(3x²-6x-5)=

b) (0,5a²+a)+(0,7a²-3a+1)-(-0.2a²+1,2a-1,5)=


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