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Ответ

Ответ дан
Julia068

Ответ:

1) 1,2 і 3 фото

х=+-6;х=+-1

у=+-6;у=+-1

2)поскольку (2х+у)^2=(2х+у)^2, то 3у=3х, х=у, поэтому заменим у на х. Имеем:

(2х+х)^2=2х

3х^2=3х

3х^2 - 3х =0

3х(3х-1)=0

х = 0

х = 1/3

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