[tex](m+(2k+9g))(m+(-2k-9g)) = (m+(2k+9g))(m-(2k+9g)) = m^2 - (2k+9g)^2 = m^2 - (4k^2+36kg+81g^2) = m^2 - 4k^2 - 36kg - 81g^2[/tex]
Ответ: [tex]m^2 - 4k^2 - 36kg - 81g^2[/tex]
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[tex](m+(2k+9g))(m+(-2k-9g)) = (m+(2k+9g))(m-(2k+9g)) = m^2 - (2k+9g)^2 = m^2 - (4k^2+36kg+81g^2) = m^2 - 4k^2 - 36kg - 81g^2[/tex]
Ответ: [tex]m^2 - 4k^2 - 36kg - 81g^2[/tex]