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JerryKKK
@JerryKKK
July 2022
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X^4 - 3 x^3 - x^2 + 3 x = 0 как решить?
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sangers
X⁴-3x³-x²+3x=0
x*(x³-3x²-x+3)=0
x₁=0
x³-3x²-x+3=0
(x³-3x²)-(x-3)=0
x²*(x-3)-(x-3)=0
(x-3)*(x²-1)=0
x-3=0
x₂=3
x²-1=0
(x-1)*(x+1)=0
x-1=0
x₃=1
x+1=0
x₄=-1.
Ответ: x₁=0 x₂=3 x₃=1 x₄=-1.
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JerryKKK
спасибо большое
sangers
Удачи.
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Answers & Comments
x*(x³-3x²-x+3)=0
x₁=0
x³-3x²-x+3=0
(x³-3x²)-(x-3)=0
x²*(x-3)-(x-3)=0
(x-3)*(x²-1)=0
x-3=0
x₂=3
x²-1=0
(x-1)*(x+1)=0
x-1=0
x₃=1
x+1=0
x₄=-1.
Ответ: x₁=0 x₂=3 x₃=1 x₄=-1.