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khmyztania03
@khmyztania03
August 2022
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При яких значеннях t рівняння x²+5tx+5t=0 не має коренів?
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ShirokovP
Verified answer
D<0
b^2 - 4ac < 0
(5t)^2 - 4*5t < 0
25t^2 - 20t < 0 /:5
5t^2 - 4t < 0
t (5t - 4) < 0
+ - +
------------ 0 ------------ 0,8 --------------> t
t ∈ ( 0; 0,8)
1 votes
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Answers & Comments
Verified answer
D<0b^2 - 4ac < 0
(5t)^2 - 4*5t < 0
25t^2 - 20t < 0 /:5
5t^2 - 4t < 0
t (5t - 4) < 0
+ - +
------------ 0 ------------ 0,8 --------------> t
t ∈ ( 0; 0,8)