Предмет: Геометрия, автор: Jehhgc

Знайти абциссу точки А(х; 2; 2), рівновіддалену від точок В(0; 5; 7) і
С(5; -3; 3)​

Мишкабаянов: Чем моё решение не лучшее?
Jehhgc: оно сразу не высветилось, поэтому так(

Ответы

Автор ответа: ismars
1

Раз точка А равноудалена, AB=AC.

A(x;2;2)\\B(0;5;7)\\C(5;-3;3)\\AB=AC\\\sqrt{(x-0)^2+(2-5)^2+(2-7)^2} =\sqrt{(x-5)^2+(2-(-3))^2+(2-3)^2} \\x^2+9+25=(x-5)^2+25+1\\x^2+8=(x-5)^2\\x^2+8=x^2-10x+25\\10x=17\\x=1,7

Автор ответа: Мишкабаянов
1

На фото

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