Предмет: Алгебра, автор: danilasolomko

Найти значение выражения x^2-9y^2/x^2-6xy+9y^2 при х=10,4 и у=13,2

Ответы

Автор ответа: rubilovalex

(x+3y)*(x-3y) / (x-3y)^2=(x+3y) / (x-3y). подставляем значения: (10,4+3*13,2) ./ (10,4-3*13,2)=50 / (-29,2) = -500 / 292= -125/73= -1 52/73.

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