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SidykinaNadegda1
@SidykinaNadegda1
August 2022
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отметьте между какими числами заключен меньший корень уравнения х2+8х+13= 0
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Answers & Comments
tanyacool
Verified answer
Д=8²-4*13=64-52=12
х1=-8-√12/2=-8-2√3/2=-4-√3
между числами -5 и -6
1 votes
Thanks 2
fadarm
Verified answer
X²+8x+13=0
D=12
≈-5,7 (между -6 и -5)
0 votes
Thanks 0
SidykinaNadegda1
ответы а) -6 и -5 в) -5 и-4) с) 2 и 3 д) 3и 4
fadarm
а)
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Answers & Comments
Verified answer
Д=8²-4*13=64-52=12х1=-8-√12/2=-8-2√3/2=-4-√3
между числами -5 и -6
Verified answer
X²+8x+13=0D=12
≈-5,7 (между -6 и -5)