[tex]a^{2} -ab+(a-b)c\\a(a-b)+(a-b)c\\(a-b)(a+c)\\\\rpta:b[/tex]
:)
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[tex]a^{2} -ab+(a-b)c\\a(a-b)+(a-b)c\\(a-b)(a+c)\\\\rpta:b[/tex]
:)