October 2018 2 9 Report

oblicz: 1) (x-y) (x+2y)=

2) (4a+b) (b-1)=

3) -2 (3a+b)=

4) -2 (3a+b) (b-1)=

5) -5 (3a+4b)+2 (a-b)=

6) -7a (2a+3b+4)=

dla a=1 dla b= -1/2

7) -18x(2y+4z-5a)=

8) (-5a +4 ) - (2a-3)=

Proszę o szybkie odpowiedzi i o obliczenia ;) PILNE!! TO NA JUTRO !


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