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yanasad
@yanasad
August 2022
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5x^2+9x-2=0 РЕШИТЕ ПОЖАЛУЙСТА ДИСКРИМИНАНТОМ!!!!
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Хадия95
5x^2+9x-2=0 .D=81+40=121.x1=(-9+11)/10=2/10=0,2.x2=(-9-11)/10=-20/10=-2.
1 votes
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отличник2003батя
D=b²-4ac=9²-4*5*(-2)=81+40=121
D>0; т. е. 2 корня
x1=(-b-√D)/2a=(-9-12)/2*5=-2.1
x2=(-b+√D)/2a=(-9+12)/2*5=0.3
3 votes
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Answers & Comments
D>0; т. е. 2 корня
x1=(-b-√D)/2a=(-9-12)/2*5=-2.1
x2=(-b+√D)/2a=(-9+12)/2*5=0.3