Ответ:
[tex](x-1)^2-x^{2} =5\\x^{2} -2x+1-x^{2} =5\\-2x+1=5\\2x=5-1\\-2x=4\\x=-\frac{4}{2} \\x=-2[/tex]
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Ответ:
[tex](x-1)^2-x^{2} =5\\x^{2} -2x+1-x^{2} =5\\-2x+1=5\\2x=5-1\\-2x=4\\x=-\frac{4}{2} \\x=-2[/tex]