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1999045
@1999045
August 2022
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15х²+4=16х
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supesha
15x^2+4=16x;
15x^2-16x+4=0
D(дискриминант)=b^2-4ac=(-16)^2-4*15*4=256-240=16
X1=16+4/2*15=20/30=1/3;
X2=16-14/30=12/30=2/5
Ответ: 1/3; 2/5.
2 votes
Thanks 6
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Answers & Comments
15x^2-16x+4=0
D(дискриминант)=b^2-4ac=(-16)^2-4*15*4=256-240=16
X1=16+4/2*15=20/30=1/3;
X2=16-14/30=12/30=2/5
Ответ: 1/3; 2/5.