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sofiko60
@sofiko60
July 2022
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СРОЧНО, ПОМОГИТЕ!!!
решите кв. уравнения
1) 25-10x+x²=0
2) c²+c=6
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Answers & Comments
Zarina2101
С^2 + c- 6=0
D=1-4 * (-6)= 1+24=25
х первое = - 1 - 5/ 2= - 6/2= - 3
х второе= - 1 + 5/2= 4/2=2
х ^2 - 10x + 25=0
D=100-4 * 25= 100-100=0 D=0 значит 1 корень
х= 10/2=5
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Answers & Comments
D=1-4 * (-6)= 1+24=25
х первое = - 1 - 5/ 2= - 6/2= - 3
х второе= - 1 + 5/2= 4/2=2
х ^2 - 10x + 25=0
D=100-4 * 25= 100-100=0 D=0 значит 1 корень
х= 10/2=5