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andreitwin
@andreitwin
July 2022
1
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А³ₓ - 6Сₓˣ⁻²=0
Решить уравнение по комбинаторике
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sedinalana
Verified answer
X(x-1)(x-2)-6*x!/(x-2)!*(x-x+2)!=0
x(x-1)(x-2)-6*x(x-1)*(x-2)!/(x-2)!*2!=0
x(x-1)(x-2)-3x(x-1)=0
x(x-1)(x-2-3)=0
x=0не удов усл
х=1 не удов усл
х=5
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Answers & Comments
Verified answer
X(x-1)(x-2)-6*x!/(x-2)!*(x-x+2)!=0x(x-1)(x-2)-6*x(x-1)*(x-2)!/(x-2)!*2!=0
x(x-1)(x-2)-3x(x-1)=0
x(x-1)(x-2-3)=0
x=0не удов усл
х=1 не удов усл
х=5