x + 2 = 0 или 4-x^2 = 0 или x - 2 =0
x = -2 4=x^2 x=2
x= +- 2
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x + 2 = 0 или 4-x^2 = 0 или x - 2 =0
x = -2 4=x^2 x=2
x= +- 2