Автор - oliyachebanova

(x-6)^2=(7-x)^2
помогите

Ответ

Проверено экспертом

Автор - JuliaKovalchook
(x-6)²=(7-x)²
x²-12x+36=49-14x+x²
x²-x²-12x+14x=49-36
2x=13
x=6.5

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