解方程(步骤)
3x^3-6x^2+3x=02x^3-6x^2-3x+9=0X^3-3x-2=0X^4-3x^2+2x^2-6x=0X^5-6x^3+9x=0...
3x^3-6x^2+3x=0
2x^3-6x^2-3x+9=0
X^3-3x-2=0
X^4-3x^2+2x^2-6x=0
X^5-6x^3+9x=0 展开
2x^3-6x^2-3x+9=0
X^3-3x-2=0
X^4-3x^2+2x^2-6x=0
X^5-6x^3+9x=0 展开
2个回答
展开全部
3x^3-6x^2+3x=0
3x(x-1)²=0
X1=0,X2=X3=1
2x^3-6x^2-3x+9=0
2x²(x-3)-3(x-3)=0
(x-3)(2x²-3)=0
x1=3,x2=√6/2,x3=-√6/2
X^3-3x-2=0
x³-2x²+2x²-4x+x-2=0
(x-2)(x²+2x+1)=0
x1=2,x2=x3=-1
X^4-3x^2+2x^2-6x=0
x(x³-3x²+2x-6)=0
x(x-3)(x²+2)=0
X1=0,X2=3 (实数范围内)
X^5-6x^3+9x=0
x(x^4-6x²+9)=0
x(x²-3)²=0
x1=0,x2=x3=√3,x4=x5=-√3
3x(x-1)²=0
X1=0,X2=X3=1
2x^3-6x^2-3x+9=0
2x²(x-3)-3(x-3)=0
(x-3)(2x²-3)=0
x1=3,x2=√6/2,x3=-√6/2
X^3-3x-2=0
x³-2x²+2x²-4x+x-2=0
(x-2)(x²+2x+1)=0
x1=2,x2=x3=-1
X^4-3x^2+2x^2-6x=0
x(x³-3x²+2x-6)=0
x(x-3)(x²+2)=0
X1=0,X2=3 (实数范围内)
X^5-6x^3+9x=0
x(x^4-6x²+9)=0
x(x²-3)²=0
x1=0,x2=x3=√3,x4=x5=-√3
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