Предмет: Алгебра, автор: xjdjdjc

Помогите с заданиями пож

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Автор ответа: keized

0

6<a<7
5-a<0

√20+√5=√4*√5+√5=2√5+√5=3√5

X²-9X+8=0
d=9*9-4*8=81-32=49=7²
x1=9+7/2=16/2=8
x2=9-7/2=2/2=1
ответ наибольший корень 8

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