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• Identical expressions

• x*sign(x) + |x| + sign(x) - three = zero
• x multiply by sign(x) plus module of x| plus sign(x) minus 3 equally 0
• x multiply by sign(x) plus module of x| plus sign(x) minus three equally zero
• xsign(x) + |x| + sign(x) - 3 = 0
• xsignx + |x| + signx - 3 = 0

• Similar expressions

• x*sign(x) + |x| + sign(x) + 3 = 0
• x*sign(x) + |x| - sign(x) - 3 = 0
• x*sign(x) - |x| + sign(x) - 3 = 0