x^2-x-2x+4-9+3x=0
x^2 -5=0
x^2=5
x1=Корень(5)
x2=-корень(5)
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x^2-x-2x+4-9+3x=0
x^2 -5=0
x^2=5
x1=Корень(5)
x2=-корень(5)