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Dimonikom
@Dimonikom
July 2022
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Нужно решить :))))))))))
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sedinalana
Verified answer
X²=t
4t²+5t-9>0
D=25+144=169
t1=(-5-13)/8=-18/8=-9/4
t2=(-5+13)/8=1
-9/4<t U t>1
x²<-9/4 нет решения
x²>1 при х<-1 U x>1
x∈(-∞;-1) U (1;∞)
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Answers & Comments
Verified answer
X²=t4t²+5t-9>0
D=25+144=169
t1=(-5-13)/8=-18/8=-9/4
t2=(-5+13)/8=1
-9/4<t U t>1
x²<-9/4 нет решения
x²>1 при х<-1 U x>1
x∈(-∞;-1) U (1;∞)