October 2018 2 381 Report

W którym przykładzie niepoprawnie dodano wyrazy podobne?

A. x do kwadratu + 2xy -y do kwadratu+2x do kwadratu -2xy +y do kwadratu=3x do kwadratu.

B. 2a-b+3a-2b=5a-3b.

C.ab+c-ba-2c= -c

D. x do kwadratu+2x+7-x do kwadratu-3x+3=x+10


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