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madMax11111
@madMax11111
July 2022
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x^2+7,8x-1,6=0 решите пожалуйста
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Verified answer
D=b^2-4ac=7,8^2-4*1*(-1,6)=60,84+6,4=67.24
корень из 67,24=8,2
x1=(-b-8,2)/2*a=(-7,8-8,2)/2=-8
x2=(-b+8,2)/2*a=(-7,8+8,2)/2=0,2
ответ:-8; 0,2
2 votes
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andrey5617
D=b^2-(-4)*acD=60.84+6.4=67.24=8.2^2X1=-7.8+8.2. x1=0.2X2=-7.8-8.2. X2=-8Ответ: x1=0.2 x2=-8
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Answers & Comments
Verified answer
D=b^2-4ac=7,8^2-4*1*(-1,6)=60,84+6,4=67.24корень из 67,24=8,2
x1=(-b-8,2)/2*a=(-7,8-8,2)/2=-8
x2=(-b+8,2)/2*a=(-7,8+8,2)/2=0,2
ответ:-8; 0,2