[tex]x\neq 1\\\frac{x^{2}-1 }{x-1} +3=5x/*(x-1)\\x^{2} -1+3x-3=5x^{2} -5x\\-4x^{2} +8x-4=0\\Delta=64-4*(-4)*(-4)=0\\x_{0} =\frac{-b}{2a} =\frac{-8}{-8} =1[/tex]
x∈∅
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[tex]x\neq 1\\\frac{x^{2}-1 }{x-1} +3=5x/*(x-1)\\x^{2} -1+3x-3=5x^{2} -5x\\-4x^{2} +8x-4=0\\Delta=64-4*(-4)*(-4)=0\\x_{0} =\frac{-b}{2a} =\frac{-8}{-8} =1[/tex]
x∈∅