the real roots of the equation |x|³-3x²+3|x|-2=0 are
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x3-3x2+3x-2=0
x3-9x2+3x-2=0
9x-3x2-2=0
9x-3x2=2
x3-9x2+3x-2=0
9x-3x2-2=0
9x-3x2=2
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