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2x2-4=0
2x6-12=0
1) y=2x+0 tj. 2x
2x=y+0
2x-y=0 |:2
x-y=0/2
3)x= 2
y=4
2x2-4=0 DOBRZE!!!
lub
x=4
y=8
2x4-8=0
I TAK DALEJ!!!
Liczę na naj pozdro!! :):*