Предмет: Алгебра, автор: LooŔÁÁ

ПОМОГИТЕ ПОЖАЛУЙСТА ОЧЕНЬ НАДО НА ЭКЗАМЕН!!!
2 И 3 НОМЕР:(

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Автор ответа: lara164
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Автор ответа: lara164
0
25-х^2=(5-x)(5+x) так надо разложить числитель
Автор ответа: lara164
0
тогда (5-х) в числитиле и (5-х) в знаменателе сократятся и останется просто 5+х, а теперь подставляй х=5 5+5=10
Автор ответа: lara164
0
понятно объяснила?
Автор ответа: LooŔÁÁ
0
да,спасибо!)
Автор ответа: lara164
0
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