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TheTwinS
@TheTwinS
July 2022
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Найти область определения f(x)
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sedinalana
Verified answer
1
x²-5x+6≥0
x1+x2=5 U x1*x2=6
x1=2 U x2=3
x∈(-∞;2] U [3;∞)
2
10x²-11x-6>0
D=121+240=361
x1=(11-19)/20=-0,4
x2=(11+19)/20=1,5
x∈(-∞;-0,4) U (1,5;∞)
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Answers & Comments
Verified answer
1x²-5x+6≥0
x1+x2=5 U x1*x2=6
x1=2 U x2=3
x∈(-∞;2] U [3;∞)
2
10x²-11x-6>0
D=121+240=361
x1=(11-19)/20=-0,4
x2=(11+19)/20=1,5
x∈(-∞;-0,4) U (1,5;∞)