Предмет: Алгебра, автор: vereskunmaksimo4ka

Ребята, объясните, как мы это получили:

Приложения:

Ответы

Автор ответа: georgpokataev

Ответ:

по формуле разности квадратов разложили и получили (x-y)(x+y) и из первого уравнения системы следует, что (х+у)=32

Автор ответа: redmanto

по формуле сокращенного умножения x²-y²=(x+y)(x-y). x+y=32 там написано, 64 перенесли в правую сторону и знак поменялся

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