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tatyanalariono1
@tatyanalariono1
July 2022
2
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Найдите корни квадратного трёхчлена: 3x^2-16x+5
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salnik1909p5sg3s
Ответ:.................................
6 votes
Thanks 12
falloutboyy
3x²-16x+5=0
a=3, b= -16, c=5
D=b²-4ac= 256-4*3*5=256-60=196=14²; D>0
x1= -b+√D/2a= 16+14/2*3=30/6=5
x2=-b-√D/2a= 16-14/2a=2/6=1/3
Ответ: x1=5; x2=1/3
4 votes
Thanks 5
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Answers & Comments
a=3, b= -16, c=5
D=b²-4ac= 256-4*3*5=256-60=196=14²; D>0
x1= -b+√D/2a= 16+14/2*3=30/6=5
x2=-b-√D/2a= 16-14/2a=2/6=1/3
Ответ: x1=5; x2=1/3