2X^3-6X^2+6X^2-1=0,怎么解?具体过程
问题描述:
2X^3-6X^2+6X^2-1=0,怎么解?具体过程
答
2X^3-6X^2+6X^2-1=0
2x(x^2-3x)+6x-1=0
2x[(x^2-3x)+3]=1
x^2-3x+3=1/2x
x^2-3x=1/2x-3
x(x-3)=1/2x-3
x=(1/2x-3)/(x-3)
x=(1/2x-3)*1/(x-3)
x=1/2