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