Предмет: Алгебра, автор: anastas45

помогите пожалуйста с этим заданием

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Автор ответа: alfabetta

Выбираем уравнение 3)
х²+(х-14)²=676
х²+х²-28х+196-676=0
2х²-28х-480=0
х²-14х-240=0
D=196+960=1156=34²
х₁=(14+34)/2=48/2=24 ⇒ х-14=24-14=10
х₂=(14-34)/2= -10 ∠0 -не подходит
Ответ длина=24, ширина=10

anastas45: ты меня спас, человечек

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