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nargiz001j
@nargiz001j
July 2022
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ДАМ 20 БАЛЛОВ
Решите уравнения.
8/x=3x+2
x^2+4x/x+2=2x/3
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treezor
1) 8/x=3x+2
(8/x)-3x-2=0
(8-3x^2-2x)/x=0
x не равен 0
8-3x^2-2x=0
-3x^2-2x+8=0
D=4+96=100
x1=2-10/-6=-8/-6=8/6=1 целая 1/3
x2=2+10/-6=-2
2) (x^2+4x)/(x+2)=2x/3
(x^2+4x)/(x+2) -2x/3=0
((x^2+4x+(x+2)(-2x/3))/(x+2)=0
x+2 не равно 0
х не равен -2
x^2-4x-2x^2/3-4x/3=0
-2x^2/3+x^2-4x/3-4x=0
x^2/3-16x/3=0 | (*3)
x^2-16x=0
x1=0
x2=16
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Answers & Comments
(8/x)-3x-2=0
(8-3x^2-2x)/x=0
x не равен 0
8-3x^2-2x=0
-3x^2-2x+8=0
D=4+96=100
x1=2-10/-6=-8/-6=8/6=1 целая 1/3
x2=2+10/-6=-2
2) (x^2+4x)/(x+2)=2x/3
(x^2+4x)/(x+2) -2x/3=0
((x^2+4x+(x+2)(-2x/3))/(x+2)=0
x+2 не равно 0
х не равен -2
x^2-4x-2x^2/3-4x/3=0
-2x^2/3+x^2-4x/3-4x=0
x^2/3-16x/3=0 | (*3)
x^2-16x=0
x1=0
x2=16