Ответ:
[tex]4 {a}^{2} - 4ab + {b}^{2} - 1 = {(2a - b)}^{2} - 1 = {(2a - b)}^{2} - {1}^{2} = (2a - b - 1)(2a - b + 1) [/tex]
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Ответ:
[tex]4 {a}^{2} - 4ab + {b}^{2} - 1 = {(2a - b)}^{2} - 1 = {(2a - b)}^{2} - {1}^{2} = (2a - b - 1)(2a - b + 1) [/tex]