x+4 + -x = x^2 + 1 x + (-x) - x^2 = -4 + 1 x^2= -3 / pierwiastek x= -pierwiastek z 3
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x+4 + -x = x^2 + 1
x + (-x) - x^2 = -4 + 1
x^2= -3 / pierwiastek
x= -pierwiastek z 3