October 2018 1 27 Report

matematyka z plusem str 173 zad 9 1 gimnazjum a jak ktos nie ma to tresc zadania:

uzasadnij ze w kazdej z ramek zapisano rownanie rownowaznie

1. 4x=20

2x=10

2. x2=25 (przy x ma byc do kwadratu)

(x-5)(x+5)=0

3. x2 +1=0(przy x ma byc do kwadratu)

x+1=x

4.2x=5x-3x

0,5x=x/2

Bardzo prosze o pomoc :( z gory dziekuje ;)


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