September 2018 2 26 Report

Hej mam zadanie domowe z matmy na poniedziałek. Jest ono w książce matematyka wokuł nas kl.2 gim. I to jest to zadanie:

Sprawdż czy poprawnie zamieniono iloczyn na sume algrebraiczną.

a) (x+y)(z+y)=xz+xy+yz+2y

b)(x+2)(x-4)=x^2+6x-8

c) (m-1)(m-3)=m^2-4m +3

d) (a- {1 2})(2b+6)=2ab+6a+b+3

x^2=to potegi 2

{1 2}=ułamek jedna druga


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